I see nothing wrong with this. Plus, games cost more to make anyway. I recall spending $75 on SF2 for the SNES, and that back in the early 90's.
On the other hand, I rarely pay full price for a game as (by the time I get to it) it has usually fallen in price. Plus, I time a lot of heavy buying around the TRU buy "2 get 1 free" sales.