There's a new $10 off $25 coupon at overstock.com
http://www.overstock.com/cgi-bin/d2.cgi?PAGE=EMAILSIGNUP
The coupon is for new users. You'll probably have to keep clicking the REFRESH button on your browser until the $10 off $25 offer appears. It will cycle through different offers when...
I just bought one at my local EB today (B&M only). It's probably just a temporary price drop, because the preowned version is still selling for $14.99 there.
I guess it's on sale, because everywhere I've checked online still has it for about $50. Only the PS2 version is $19.99. Gamecube and Xbox versions are still $49.99 at outpost. It got a 73.4% at gamerankings.
http://shop1.outpost.com/product/3816257