Its not just the costumesI have never thought an RE game was a waste of money before either, as usually they take a while to complete. RE5 took me like 8 hours and that was taking it easy as well.
RE4 on the other hand took me a lot longer.
I CBA completing it time and time again to get a new costume, but each to their own i guess.


The way they designed the game is that if you unlock all costumes it makes the MP arena's easier than they would otherwise be (some are very challenging). Obviously people can use trainers if they cba & the game also has inf ammo for all weapons (you have to unlock that though with the collectables).