Well I just found out about PharmacyChecker.com today, and if I used them yesterday for my medication instead of GoodRX, I could of gotten the 90 day supply for $51.45 compared to the $53.38 -- a savings of a couple bucks, or $8 annualized. I'll just make sure to check both every time for any medication I need which my insurance doesn't cover better. (I find I save lots of money using GoodRX -- and the like -- compared to my prescription insurance.)