Google is getting VERY good at catching spun content so you'd better be talented at manual spins. If they DO catch you, of course they'll spank you... and hard. So anything you use spun content on is inherently AT RISK. Worse yet... Google gets better at finding spun/poor content every year. So in the longrun you're screwed. I'd weight your other options and see if you couldn't find a cheaper source for manually hand written content.
Yea mate, WordAI really is overpriced IMO too, which is why I didn’t rank it higher in the cost-effectiveness rankings. Now, it did change more than a few words, but I see how you would think it’s less than 80% unique. TBS is also great, but only in terms of functionality and the easy interface which allows manual spinning to be done quite fast. As for their thesaurus, I think they have a lot to improve.
Having struggled flat broke for 4 years in IM before I made it, I know better than anyone what it's like to never see success. I know what it's like to keep failing over and over when it seems like everyone else is succeeding online. The good thing is that I never gave up, so here I am, who know how to make money online wanting to help you achieve what I did... MUCH faster than I did. Hey it's Leo. I'm a sort of an optimist. Survived internet marketing, wonderful wife, have 2 kids. My wife would say I'm a night... I think morning. Enjoy travel, spend times with friends. Go out to parks, fishing and watching football and trees (treekeeper) are the things that I love to do.