Very good question. I think that it is high, depending the game. Then again it depends how I feel about the game thats worth the money it cost. There are games that you can play endlessly no matter how you look at it (Online games, Racing games, Strategy), that I might not have a problem paying 40-60. I couldn't bring myself to pay 60 for some adventure game that lasts me 5-10 hours. Hell even with the new street fighter, I am trying to decide if 60 is worth it.
I love buying used games, but I also like to support the Game co.'s if I really like them. I hardly have a problem paying 40-50 for a Nintendo brand game, although nothing has caught my eye as of yet. But some game I MIGHT not like and pay 60...dunno.
Clownzilla I wish I was as controlled as you! Spending 20 the most on a game is hard with this generation, tell me your secret!!