Three Things to Read Instead of a Rate
Rather than hunting for an average, read the estimate in front of you on three points.
One: is a number of rounds written? If not, it is usually not bad faith — it simply has not been considered that far. Ask, and it is usually added. The moment it is added, the estimate becomes comparable to any other.
Two: is the rate for the fourth round onward written? An estimate with a ceiling but no price beyond it has postponed the argument rather than resolved it. Whether this line exists tells you how much friction that studio has already lived through.
Three: is the method for submitting revisions written? Verbally, as things occur — or gathered and sent once? A studio that expects them gathered can use each round fully, and the total comes down as a result.
With all three present, a slightly higher figure usually ends up costing less. A cheap estimate missing all three is not cheap. It simply has no price yet.
There is something the client side can do as well. When handing over a revision, hand over the problem rather than the correction. Not "move it slightly left," but "my eye doesn't go here and it bothers me." The first is an instruction: it gets executed, and a new discomfort surfaces just past it. The second is a problem: it can be solved at the cause. This is usually where the number of rounds is decided.
And one more: send them together. Notes arriving one at a time force the work to stop, check, and return each time. Three points sent in three messages consume more than twice the time of three points sent at once. Identical content, different delivery, different money. That is one more reason no rate can be written.
All of the above concerns what happens after revisions begin. The likelihood of "this isn't what I imagined" is largely settled before the brief is ever sent. Narrow the references to three. Name the final decision-maker. Write down one thing that must not change. Projects that arrived with those three settled have finished with measurably fewer rounds. The most reliable way to lower a revision fee is not to negotiate it down but to remove the reasons for revision in advance.