Start with volume, not price. Under two videos a month, no retainer on this list makes sense — commission per project and keep the cash. Between two and four, the cheap end of the ladder is usually right. Above four a week, the maths flips and the expensive plans get cheaper per delivered video than the cheap ones.
Then check the revision policy before the price. A $495 plan with three revision rounds costs more than a $1,250 plan with unlimited rounds the first time a video comes back wrong twice — because the third round is where you either pay extra or publish something you don't like.
Finally, ask every studio you shortlist the same question: how many clients does one editor carry? VidPros publishes the answer, which is why they're on this list despite an hours-based model most creators find harder to budget. If a studio won't tell you, that silence is the answer.