What you are actually paying for
It helps to separate the two halves of an agency engagement, because they are priced together and are worth very different amounts to a small business.
The first half is setup. Research the market, decide the campaign types, build the structure, write the ads, pick keywords and match types, write negatives, set budgets and locations, wire up conversion tracking. It is a few days of skilled work, done once.
The second half is management. Weekly search term reviews, bid and budget adjustments, new ad tests, reporting. That is ongoing, and it is what the retainer is really for.
The awkward part is that you pay monthly for both, and the expensive half is the one that happens once.
For a business spending $2,000 a month on ads, a 15% management fee is $300 on top, and most flat retainers start higher than that. It is common for the fee to exceed the ad budget, which means more of your money reaches the agency than reaches Google.
The structure, which is the part that matters
Google's documentation describes four levels. The account holds billing and conversion tracking. Campaigns hold the type, budget, locations and bidding. Ad groups hold a set of similar ads and keywords. Ads and keywords sit inside those.
The rule that carries most of the value is tightness. One ad group should cover one thing. If you are a plumber, "boiler repair" and "bathroom installation" are two ad groups, not one, because the ad copy for each should say different words, and the person clicking should land on a different page.
This is not aesthetic. Google builds Quality Score from expected click-through rate, how closely the ad matches the intent behind the search, and how useful the landing page is. A loose ad group fails all three at once: the ad cannot mention what everyone searched for, so fewer people click, and the page cannot deliver what everyone wanted.
The data is unkind here. In WordStream's study of 251,236 account reports, 36% of accounts sit below a Quality Score of 4, and only 22% reach 7 or higher. Structure is most of that.
The mistakes that actually cost money
Launching six campaigns at once. The most common one, and it is not a settings error. Build one campaign for the single service that makes you the most money. One campaign teaches you how the account behaves. Six teach you nothing, because you cannot tell which is losing money and you will not have time to fix any of them.
No conversion tracking. An account without it cannot tell you what worked, which means every later decision is a guess dressed up as analysis. Set it up before you spend anything, not after the first disappointing month.
No negative keywords. A quarter of businesses in that study have never added one. The four patterns worth excluding before you launch are covered in setting up without wasting budget on irrelevant clicks.
Picking the campaign type by name. Google lists Search, Display, Shopping, Video, App and Performance Max. Search is text ads for people actively looking for what you sell, and for most small businesses starting out that is the one. Display reaches people browsing, which is a different job and a different expectation.
When an agency is genuinely the right answer
Worth being straight about this rather than pretending otherwise. If your spend is large enough that a few percent of improvement pays the fee several times over, an agency is good value. If you operate across many markets or languages, the complexity is real. If nobody internally will ever open the account, paying someone to look at it beats nobody looking at it.
Below a few thousand a month, the arithmetic usually goes the other way. The retainer costs more than the waste it prevents, and the account is simple enough that the weekly routine is fifteen minutes.
Doing the setup half without the retainer
AdPilot exists for the expensive half. You give it your website URL, it reads the site and the market around it, and it builds the campaign structure: ad groups themed properly, keywords with match types, negative keywords, headlines and descriptions, budgets, locations and extensions. Every field is editable and every choice is explained where you make it, so you are not asked to already know what phrase match is in order to approve one.
Campaigns land in your Google Ads account paused. Nothing spends until you have read it and switched it on. And once they are running, the Optimize page reads your live account and tells you what to change next, which covers the management half at the level a small account needs.
- ✓Properly themed ad groups, built rather than learned
- ✓Negative keywords written before launch, not after the bill
- ✓Campaigns arrive paused so nothing spends unreviewed
- ✓Plain-language reasoning next to every setting
- ✓$129 a month with no minimum and no percentage of spend
Questions people actually ask
How much does a Google Ads agency cost?
What does properly structured actually mean?
Should I start with one campaign or several?
When is an agency worth paying for?
Do I need conversion tracking before I launch?
Citations (5)showhide
- 1How Google Ads accounts are structuredGoogle Ads Help
- 2Our Biggest Google Ads Performance Study Yet: What We FoundWordStream
- 3About Quality Score for Search campaignsGoogle Ads Help
- 4About negative keywordsGoogle Ads Help
- 5Choose the right campaign typeGoogle Ads Help
