How Much Does Google Ads Cost? Ad Budget and Agency Fee

Google Ads can cost £199 per month, £999 per month or £9,999 per month. The platform itself does not impose a single price for a campaign. You are the one who sets the budget, and the system spends it on clicks, impressions or conversions — depending on the campaign type and goal.

The problem starts when a business owner asks: "How much do I actually need to prepare for this to make sense?". Because the cost of Google Ads is not just the money paid into Google. On top of that comes the configuration, campaign management, analytics, fixes on the website, the product feed, the specialist's work and the time needed to gather data.

In this article we will break the cost of Google Ads down into simple parts: the ad budget, the cost per click, the agency fee, the setup charge and the additional elements that are easy to forget. No magic promises. No "it depends" as the whole answer.

In short

Google Ads has no single price — you set the budget yourself and it realistically usually starts at around £199–399 per month for clicks, plus a possible agency fee (most often 10–20% of the budget or a fixed amount). A sensible budget depends on the industry, the cost per click and the goal. The full cost is the media budget plus the fee plus the time to measure conversions — without measurement even a large budget gets burned. Part of your presence in Google is free, however — see what free advertising for your business in Google can realistically deliver.

TL;DR

• Google Ads usually consists of two main costs: the budget for Google and the remuneration of the agency or specialist.
• A small local campaign can start at around £199–499 of ad budget, but for e-commerce a more sensible threshold is often £599–1,599 per month.
• Campaign management by an agency can be billed as a fixed amount, a percentage of the budget or a mixed model.
• A low budget does not always mean savings. Sometimes it means too little data, too few clicks and no basis for decisions.
• In an online store you have to add purchase measurement, the product feed, Google Merchant Center and profitability control.
• The biggest risk is not the cost of the advertising itself, but spending money without measuring sales and margin.

What does the cost of Google Ads consist of?

The cost of Google Ads is the sum of the money spent on ads and the cost of the work of the person or agency that prepares and runs the campaign.

Element	Who do you pay?	What do you pay for?
Ad budget	Google	Clicks, impressions, conversions or ad serving
Fee / management	The agency or specialist	Configuration, management, analysis and campaign fixes
Campaign setup	The agency or specialist	Preparing the account, structure, conversions, ads
Additional work	Depending on the scope	Product feed, GTM, GA4, landing page, store fixes

So if we say that "Google Ads costs £799 per month", we have to clarify straight away:

• whether the whole £799 goes to Google,
• whether the £799 is the budget together with management,
• whether this amount includes the configuration,
• whether the campaign covers only search, or also Google Shopping, Performance Max and remarketing.

This matters, because two offers can look similar yet in practice mean a completely different scope of work.

Acronyms in one sentence

CPC is the cost of a single click.
CPA is the cost of a single conversion, e.g. a purchase or a form submission.
ROAS is the revenue from advertising divided by the cost of advertising — a quick indicator of the return on a campaign.

The Google Ads ad budget — what exactly is it?

The ad budget is the amount you allocate to serving ads in Google.

Example:

You have a budget of £599 per month. You set up a search campaign. A user types "mattress shop Rzeszów", sees your ad and clicks. Google charges a fee for the click.

If a click costs £0.50, £0.50 disappears from the budget. If a click costs £1.60, £1.60 disappears.

Google Ads works in an auction model. You are not buying a fixed position in Google "for a month". You compete for impressions with other advertisers.

The cost is influenced by, among other things:

• the industry,
• the competition,
• the quality of the ads,
• the quality of the landing page,
• the location,
• the user's device,
• the campaign type,
• the bidding strategy,
• the conversion data.

In practice the ad budget is the fuel. But even good fuel will not help if the car has a leaky tank. In Google Ads such a "leaky tank" can be badly configured measurement, a slow store or an offer that does not hold up against the competition.

What should the minimum Google Ads budget be?

The minimum budget depends on the industry, the competition and the campaign goal, but a budget that is too small usually does not provide data for a sensible assessment.

Type of business	Example monthly ad budget	Comment
Small local business	£199–499	Good to start with when the area and number of services are limited
Services in a competitive industry	£499–1,599	A larger budget is needed because clicks can be more expensive
Small online store	£599–1,399	The minimum to test product and sales campaigns
Mid-size e-commerce	£1,399–4,999	More data, product segmentation, remarketing
Large store / wide offer	£4,999+	Requires margin, ROAS, feed and analytics control

These are not guarantees of results. They are practical ranges that help assess whether a campaign has enough to collect data from.

Why £99 per month is usually not enough

Let's assume a click costs £0.60 on average.

A budget of £99 gives around 166 clicks per month.

If a store has a conversion rate of 1%, you can expect around 1–2 orders. With such a small amount of data it is hard to tell whether the campaign is working or simply had too little traffic.

Now another example:

A budget of £999 at the same CPC gives around 1,666 clicks. This still does not guarantee success, but it already lets you see:

• which products generate clicks,
• which categories sell,
• where the budget is being burned,
• which queries are off target,
• whether the problem is in the ad, the price, the page or the offer.

In Google Ads the budget has to be large enough to allow you to draw conclusions.

How much does a click in Google Ads cost?

A click in Google Ads can cost anything from a few pence to several pounds, depending on the industry, the competition and the quality of the campaign.

Industry / campaign type	Possible CPC level	What it means in practice?
Cheap products, wide offer	£0.10–0.50	Lots of clicks, but you have to watch the margin
Mid-competition e-commerce	£0.30–1.20	A typical range for many stores
Local services	£0.40–2	A lot depends on the city and the competition
Finance, law, B2B	£2–10+	Fewer clicks, but potentially a higher customer value

The most important thing: a cheap click is not always a good one. A more expensive click can be better if it leads to a customer who actually buys.

If you sell a product for £15.99 with a low margin, a click for £1 may be too expensive. But if you acquire a B2B customer worth £3,999, a click for £6 may be acceptable.

Work out your budget in 4 steps

1. Check the average order value.
2. Work out the margin on a typical order.
3. Decide the maximum you can pay for a single order.
4. Estimate: required number of orders × cost of acquiring an order ≈ starting budget.

Example: if you want to win 30 orders and the acceptable cost of acquiring a single order is £12, the test budget should be around £359. In practice it is worth adding a margin, because the first weeks of a campaign also serve to gather data.

Ad budget vs agency fee — how do they differ?

The ad budget goes to Google, while the agency fee is the remuneration for the work on the campaign.

Example:

Item	Amount
Ad budget to Google	£799
Agency management	£239
Total per month	£999

In this example you do not have a campaign for £239. You have management for £239 and a budget of £799 that Google spends on ads.

This has to be clearly separated, otherwise it is easy to compare offers in the wrong way.

How do agencies bill for Google Ads?

Agencies most often bill for Google Ads in one of three models: a fixed fee, a percentage of the budget or a mixed model.

1. Fixed retainer

The agency charges a fixed monthly amount, e.g. £199, £299, £499 or more.

This model is simple. You know how much you are paying for management. It works well for smaller and mid-size campaigns where the scope of work is predictable.

Example:

• ad budget: £999,
• management: £299,
• total monthly cost: £1,299.

2. Percentage of the budget

The agency charges a set percentage of the ad spend, e.g. 10%, 15% or 20%.

Example:

• ad budget: £1,999,
• agency fee: 15%,
• management: £299,
• total monthly cost: £2,299.

This model grows together with the scale of the campaign. For larger budgets the percentage tends to be lower, otherwise management would become disproportionately expensive.

3. Mixed model

This is often the most sensible option.

The agency sets a minimum management fee and an additional percentage once a defined budget is exceeded.

Example:

• minimum for management: £299,
• budget up to £1,999: no additional fee,
• budget above £1,999: an additional percentage.

This model protects both sides. The client does not pay absurdly much on a small budget, and the agency has the means to do real work on a larger account.

How much does agency management of Google Ads cost?

Agency management of Google Ads can cost from a few hundred pounds for a small campaign to several thousand pounds per month for e-commerce.

Scope of management	Example monthly cost
Small local campaign	£139–299 net
Standard service campaign	£239–499 net
E-commerce with Google Shopping / PMax	£299–799 net
Larger store with segmentation and feed	£599–1,599 net
Large advertising account	individually

On top of this there may be a one-off setup, that is the preparation of the campaign.

Initial work	Example cost
Basic account configuration	£99–299 net
Campaigns from scratch + conversions	£199–599 net
E-commerce + Merchant Center + feed	£299–999 net
Audit and rebuild of a large account	individually

Note: very cheap management is not always a bargain. If someone is supposed to run an account with several campaigns, a feed, analytics, ad tests and reporting for £59 per month, then realistically they have to skip something.

The most commonly skipped items are:

• query analysis,
• keyword exclusions,
• ad testing,
• conversion control,
• feed fixes,
• profitability analysis.

And that is precisely where the profit or loss often lies.

Not sure what budget makes sense for your store? Order a Google Ads account audit — we will check conversion measurement, the product feed and the places where the budget is being burned.

Example Google Ads budgets for an online store

The budget for an online store should depend on the number of products, the margin, the competition and whether the store has correct sales measurement.

Scenario 1: a small store, first campaigns

Assumptions:

• the store has a few dozen or a few hundred products,
• the budget is limited,
• the goal is to check whether Google Ads delivers sales.

Example cost:

Element	Amount
Ad budget	£599
Management	£239–359
Total per month	£839–959

What you can do:

• a product campaign or Performance Max,
• basic remarketing,
• a brand campaign,
• conversion configuration,
• a first product analysis.

What not to do:

• do not advertise everything at once,
• do not mix products with different margins without control,
• do not judge the result after 3 days,
• do not launch a campaign without purchase measurement.

Scenario 2: a store with a larger offer

Assumptions:

• the store has several thousand products,
• organic sales or a marketplace are already running,
• the goal is to scale sales.

Example cost:

Element	Amount
Ad budget	£1,599–3,999
Management	£399–999
Total per month	£1,999–4,999

What you can do:

• split campaigns by category,
• a separate approach for bestsellers,
• exclude products with no margin,
• Performance Max tests,
• Google Shopping,
• remarketing,
• analysis of ROAS and the cost of acquiring an order.

Here the campaign is no longer just about "switching the ads on". You have to look at sales data, margin, seasonality and the quality of the product feed.

Scenario 3: local services

Assumptions:

• the company operates locally,
• it wants to win phone enquiries or form submissions,
• the offer has a few key services.

Example cost:

Element	Amount
Ad budget	£299–999
Management	£179–399
Total per month	£479–1,399

What matters:

• well-chosen keywords,
• ad location,
• serving hours,
• the quality of the landing page,
• measuring calls and forms,
• excluding accidental phrases.

For local services a smaller budget can make sense if the campaign is well narrowed down. But if the advertising goes out across the whole region, many services and general phrases, the budget quickly gets diluted.

What affects the cost of Google Ads the most?

The cost of Google Ads is affected not only by the cost per click, but also by the quality of the page, conversion measurement, the competition and the profitability of the offer.

1. Competition in the industry

The more companies fighting over the same clicks, the greater the pressure on bids.

For a store with niche parts, clicks can be cheaper. For loans, legal services, photovoltaics, furniture or popular electronics, bids can be much higher.

2. Landing page quality

Google Ads does not end in the advertising panel.

If the ad leads to a page that:

• takes a long time to load,
• has a poor product description,
• does not show the delivery cost,
• has a confusing cart,
• works badly on a phone,

then the campaign can be expensive, even if it is set up well.

In e-commerce the advertising and the store have to work together. That is why with WooCommerce stores it is often worth combining campaigns with a technical analysis of the store, its speed, the cart and the purchase path. A good fit here is, for example, a store SEO audit or WooCommerce store maintenance, because conversion problems can eat into the ad budget.

3. Conversion measurement

Without conversion measurement Google Ads is like driving a car without an odometer.

You have to know:

• how many purchases there were,
• what the sales value was,
• how much a lead cost,
• which campaigns sell,
• which phrases burn the budget,
• what the ROAS is.

If a store has badly implemented conversions, the system can "learn" from incorrect data. In plain terms: Google will reinforce activities that only look good in the panel but do not necessarily bring real sales.

4. Product feed

In e-commerce the product feed is hugely important — the file with products sent to Google Merchant Center.

If the feed has errors, Google can:

• reject products,
• limit ad serving,
• match products to queries badly,
• promote the wrong variants,
• waste the budget on products that make no business sense.

With WooCommerce stores the feed often needs tidying up: product names, categories, GTIN — that is the global product code, e.g. the EAN from the packaging — images, availability, prices, variants and attributes.

In short: if Google receives a mess in the product data, the product ads will also work chaotically.

If you run a store and want to grow product sales, Google Shopping campaigns should be combined with control over the feed and product data.

5. Margin and average cart value

Two campaigns can have the same ROAS but completely different profitability.

Product	Price	Margin	Ad cost per sale	Conclusion
Product A	£19	£4	£3	£1 left before other costs
Product B	£99	£35	£12	The campaign can be much healthier
Product C	£15	£1.59	£2.39	The advertising generates a loss

That is why in e-commerce it is not enough to ask: "How much in sales did the campaign make?". You have to ask: "Are those sales profitable?".

Is Google Ads worth it on a small budget?

Google Ads can be worth it on a small budget, but only when the campaign is heavily narrowed down.

On a small budget, do not do everything at once. Do not launch at the same time:

• Search,
• Shopping,
• Performance Max,
• YouTube,
• Display,
• remarketing,
• a campaign across the whole of Poland,
• a campaign on all products.

It is better to choose one specific direction.

Example for a store:

"To start with, we promote only products with a good margin, available straight away, with a sales history and a sensible price."

Example for services:

"To start with, we promote only two services in one city, during the company's working hours, with call measurement."

A small budget requires discipline. The less money there is, the less room for accidental tests.

Agency or in-house — when to choose what?

Running Google Ads in-house makes sense for simple campaigns and small test budgets. An agency makes sense when mistakes start to cost more than a specialist's management.

When you can do it yourself

Running it in-house can make sense when:

• you have a small range of services,
• you understand the basics of Google Ads,
• you can check conversions,
• you have time for analysis,
• you accept a learning period.

If you spend £99 per month, you can treat it as learning. If you spend £999, £1,999 or £5,999 per month, mistakes start to cost considerably more.

When it is worth handing it to a specialist

A specialist is needed especially when e-commerce, a larger budget or measurement problems come into play.

It is worth asking for help when:

• you spend the budget but do not know whether the campaign is earning,
• you have many clicks and few sales,
• Google Ads shows conversions but GA4 shows something different,
• products are rejected in Merchant Center,
• Performance Max spends the budget but you do not know on what,
• campaigns are running but ROAS is falling,
• you are not sure whether the product feed is correct,
• the WooCommerce store has problems with speed or checkout.

A specialist should not just "set up the ads". They should help connect the advertising, the data, the page and the sales.

At SEMTAK we look at Google Ads technically and commercially: whether the campaign has correct measurement, whether the store can take the traffic, whether the product feed is not blocking sales and whether the budget is not going into accidental clicks.

How to choose and settle with a Google Ads agency?

You can tell a good agency not by the fact that it promises the cheapest clicks, but by the fact that it asks about margin, measurement, conversions and the profitability of the campaign.

Do not compare on price alone. Compare the scope of work.

Checklist of questions for an agency

Ask:

• Is the ad budget separated from the fee?
• Is conversion configuration included in the price?
• Do you check GA4 and Google Tag Manager?
• Do you analyse user queries?
• Do you run Google Merchant Center?
• Do you fix the product feed?
• Does the report show sales, cost and ROAS?
• Do I have access to the Google Ads account?
• Does the advertising account belong to me?
• Is there a notice period in the contract?
• Do you help assess the profitability of the campaign, not just the number of clicks?

If an agency does not want to give access to the account, or the account does not belong to you, that is a red flag. The advertising account, the data and the campaign history should be your asset.

What a monthly report should contain

A good report does not have to be 40 pages long. It has to answer simple questions.

Question	What should be in the report?
How much did we spend?	Campaign cost and management cost
What did we get?	Purchases, leads, revenue, conversion value
Is it worth it?	ROAS, CPA, cost per order, a note on margin
What works?	Best campaigns, products, phrases, ad groups
What does not work?	Campaigns to limit or rebuild
What do we do next?	Specific decisions for the coming month

A report without conclusions is just a data dump. A store owner needs information: what we are improving, what we are scaling, what we are switching off.

If you want to put your campaigns in order from the side of ads, measurement and sales, see Google Ads campaign management.

Google Ads for WooCommerce — what to watch out for?

In WooCommerce, Google Ads often comes apart not over the ads themselves, but over the store's technicalities.

Typical problems:

• incorrect purchase measurement,
• duplicated conversions,
• no cart value in Google Ads,
• problems with the product feed,
• rejected products in Merchant Center,
• a slow cart,
• badly working product variants,
• incorrect promotional prices,
• missing GTIN data,
• badly set VAT rates or delivery.

In plain terms: if the store passes data about purchases, prices or products badly, Google can spend the budget on the basis of incorrect information.

If the WooCommerce store has technical problems, the campaigns can only reveal those errors more quickly. The advertising delivers traffic, but the store blocks the sales.

In such a case simply "tweaking the campaign" is not enough. What may be needed is a technical analysis of WooCommerce, an improvement of the cart, control of the feed and configuration of measurement.

A natural complement to Google Ads is building a WooCommerce store in a way that is prepared for sales and measurement, or WooCommerce store maintenance if the store is already running and needs ongoing fixes.

What can you check yourself?

Before you commission a campaign or increase the budget, check a few things.

1. Check whether your conversions are set up correctly

Go into Google Ads, GA4 or GTM and check whether you are measuring:

• purchase,
• purchase value,
• form,
• phone click,
• add to cart,
• checkout start.

In a store the most important thing is the purchase and its value. Without that it is hard to assess ROAS.

2. Work out how much you can pay for a customer

Calculate it simply:

• average order value,
• margin,
• cost of delivery or handling,
• payment cost,
• acceptable advertising cost.

If the margin on an order is £12 and acquiring an order costs £16, the campaign can increase sales and generate a loss at the same time.

3. Check how the site works on a phone

Check:

• loading speed,
• visibility of the "add to cart" button,
• the simplicity of the form,
• delivery costs,
• payment methods,
• errors in checkout.

Most ad traffic may come in from a phone. If the mobile version of the store is poor, the ad budget will work worse.

4. Choose products with a sensible margin

Do not advertise everything blindly.

Choose products that are:

• available straight away,
• with a good margin,
• with a competitive price,
• with a good photo,
• with a clear description,
• with no delivery problems.

This is better than launching a campaign on the whole catalogue.

5. Check whether the Google Ads account belongs to you

This is very important.

Check whether:

• you have administrative access,
• the payment details are yours,
• the campaign history stays with you,
• you can change agencies without losing the account.

The Google Ads account should be the property of the company, not the agency.

6. Check whether the report shows a business result

The number of clicks is not enough.

Check whether you can see:

• cost,
• sales,
• the number of conversions,
• cost per conversion,
• ROAS,
• the best products,
• campaigns to switch off,
• recommendations for the coming month.

If the report does not help you make a decision, it is too weak.

How much does Google Ads cost — a quick summary

Google Ads for a small business can cost a few thousand pounds per month, and for e-commerce it often requires a larger budget, because products, the feed, Merchant Center and margin control come into play.

Situation	Budget to Google	Management	Total per month
Small local campaign	£199–499	£139–299	£339–799
Service business	£499–1,599	£239–499	£739–2,099
Small e-commerce	£599–1,399	£299–599	£899–1,999
Mid-size e-commerce	£1,599–4,999	£499–1,199	£2,099–6,199
Large store	£4,999+	individually	individually

The most important thing: do not start from the question "how cheaply can I do it?". Start from the question "what budget will let me gather data and check profitability?".

Summary

The cost of Google Ads is not a single line in a price list. It is the sum of the ad budget, campaign management, configuration, measurement, analytics and often also fixes on the store or website.

The worst scenario is not a high budget. The worst scenario is a budget spent without control, without conversions and without knowing which activities really sell.

Not sure what budget makes sense for your store? Order a Google Ads account audit — we will check conversion measurement, the product feed and the places where the budget is being burned.