This game has gotten positive comments on CAG, and with the b2g1 sale going on, I figured this price was worth a mention of it's own. I also figured this was worth pulling out because the game is getting some odd treatment at Gamestop and there's no telling how long this price will last. Just a few days ago the new price was $19.99 while the used price was $27.99. Now the tables are turned, with the new price back up to normal ($29.99), but the used price is $17.99. It's as if they can't make their mind up.
If you want this game, and don't mind buying a used game online from gs.com (i.e. the possibility of not getting case and/or maual), I think this is worth it alone, but even more so if there are 2 other $17.99 games you want to combine it with, using the B2G1FREE coupon code to buy 2 get one free.