I got TMNT for I think $8 from Redbox around Christmas. There was a lot of potential in it (with some polish it really could have been a fun update to the beat em' up arcade style) but as is, it feels rushed, incomplete and at times boring. The boss battles in particular are just not fun. It was worth the $8 because I was able to sell it off for like $20 at the time, but hard to justify it otherwise.
Wound up buying Dead Island Definitive for $8 though.
Side note, if you're a BeFrugal user, you can get 7% back if you go through them before buying.