Agency quotes for an identical brief routinely land five times apart. The instinct is to assume somebody is overcharging, and occasionally somebody is. More often the four proposals describe genuinely different amounts of work, and the brief was not specific enough to force them to say so.
Here is what actually moves the number, and how to make the pile comparable before you choose.
What agency quotes are actually buying
Almost every proposal bundles three separable things: senior time, junior time, and production. The ratio between them is the single biggest driver of price and the one least often stated.
A quote built around a senior media buyer who personally opens your account three times a week costs a multiple of one built around a junior running a checklist with occasional oversight. Both are legitimate businesses. Only one of them will catch the thing that is quietly wrong with your account in week two.
Production is the other quiet variable. Creative volume is the main lever in paid social now, and an agency planning to produce a steady stream of new concepts every month is carrying a real cost that an agency planning to rotate your existing three images is not.
The four variables that move the number most
Seniority, as described above. Ask for the name of the person who will be in the account and how many other accounts they carry. A number above about ten tells you what level of attention to expect.
Scope breadth. One platform or three. One country or four. Ads only, or ads plus landing pages plus tracking. Each addition is not a small increment — a second market usually means separate creative, separate budgets to clear the learning phase, and separate reporting.
Who owns the measurement work. Fixing tracking properly — server-side events, offline conversion import, a reporting layer that reconciles with your own records — is a project. Some quotes include it, some assume it already works, and most do not say which.
Whether the agency intends to say no. This sounds soft and it is not. An agency that plans to tell you when the right move is to pause, or that your landing page has to change before any of this works, is budgeting for conversations that take time. The cheapest quotes usually assume none of those conversations happen.
Why the cheapest quote is often the most expensive
The failure mode is familiar enough to be predictable. A low retainer buys a small amount of attention. The account gets set up competently and then runs on autopilot. Three months in, cost per lead has drifted up, nobody has noticed, and the money lost to drift is several times the saving on the fee.
That is not an argument for the most expensive quote either. It is an argument for working out what a month of real attention is worth against your ad spend. If your media budget is large, a few percentage points of improvement pays for a lot of seniority. If it is small, it genuinely may not, and an honest agency will tell you so — which is why an agency that states its minimum spend on the first call is giving you a signal rather than a barrier.
How to make agency quotes comparable
Rewrite the brief so the variables cannot hide. Four additions do most of the work:
- State the ad budget. Agencies price differently against different spends, and a quote built on a guess is not a quote.
- Ask for a named account owner and their account load. In writing, in the proposal.
- Ask what is explicitly out of scope. Creative production, landing pages and additional markets are the three that become invoices later.
- Ask for the first ninety days as a list of deliverables with dates. Vague proposals cannot survive this question, and specific ones become easy to compare line by line.
Then put the four proposals in a table with one row per deliverable. Most of the apparent five-times spread resolves into two or three genuinely different offers, and the choice becomes a judgement about how much attention your account needs rather than a guess about who is honest.
What a good quote tells you without being asked
The proposals worth taking seriously usually share a few habits. They state what they will not do. They name a figure for ad spend below which they would advise against starting. They describe what has to be true before results can be judged, and how long that takes. And they say what happens if it does not work.
If you want to see what that looks like applied to your own account, our free audit exists for exactly that reason: it is hard to quote honestly for an account nobody has looked at.
Questions people ask before hiring
Why do agency quotes vary so much?
Because the proposals describe different amounts of work. Seniority of the person in the account, how many platforms and markets are covered, whether creative production is included, and whether anyone is fixing measurement each move the number substantially, and most briefs are not specific enough to force an agency to state them.
Should I pick the cheapest quote?
Only if you have established it covers the same work. A low retainer usually buys less attention, and on a meaningful ad budget the cost of an account drifting unnoticed for a quarter is normally larger than the saving on the fee.
What should I put in the brief to get comparable quotes?
Your ad budget, the markets and platforms in scope, who owns creative production and landing pages, and a request for the first ninety days as dated deliverables. Those four additions remove most of the ambiguity that causes the spread.
Is a percentage of ad spend better than a flat retainer?
Neither is better in itself; they fail differently. A percentage ties the agency fee to spending more, a flat retainer gives no upside for improving results. What matters is whether you can see the incentive clearly and live with it.