Thought about it.. I actually went and sign up at one place, did all the paperwork, but because I admitted to having some prior conditions (asthma, allergies, etc) they said I had to get a paper filled out by my primary care saying that I'm allowed to do it. I'm not allowed to fax/scan the form to her and I haven't gotten around to mailing it.
According to what I read while I was there I would've gotten $30 the first time each week and $40 if I went back a second time that week. The reviews on Google showed people getting different compensation though, so I'm not sure they have set prices.