I've not heard of paid reviews before. Sounds like an odd setup. People have suggested I send free copies to reviewers, is that what you mean? I think I'd rather get bad reviews. The beauty of self publishing is you can go back, change and fix the book and it's online the next day. Surely that's better in the long run. Saying that, I ask my friends to read and review my book in the hope it would move up higher, but that seems to have backfired as one of them did review it but only after reading one chapter. I'm learning I guess.