I have a website where people get (free) appraisals of electronics with a crazy high completion rate. I want to know what the top (few?) options are for pure profit (other than asking for money) between completing 3 pages of info and an appraisal estimate. I'm thinking a (short) survey they must finish to continue, or (maybe) a slightly large video ad they have to watch before they get the results.
I didn't find a survey network for this, but I'm also not positive that (completed) surveys are higher paying than my other options.
~15k estimates per month.