I recently tried to send offers on a few items, and I’m getting pretty good results with about 50% of offers resulting is sales. Granted, this is a small scale tests for items that already had quite high interest, but I read somewhere on Reddit that in general send offers to watchers result in about 20-30% sales. I’m going to test this today (end of the month) and see what’s the outcome. I will report back here my experience with this experiment :).