I paid $5. I have an 8 yr old who likes Wii Sonic and Mario games. I didn't know if I could interest him. I didn't know if I'd like it. The $5 was what I was able to gamble. Now that we've both played it (I like it more than my son), I'm going back right now and adding another $10. I think it's worth $15 given the length of the game. I'd pay more if it were longer.