Just as the subject line says, plus my local B&M store was having a 20% clearance sale. I also saw N+ & Geometry Wars: Galaxies, among others, for $14.99. But the real deal was Advance Wars. With the discount, the cost was just $8.
Chances are it has been $9.98 at your local store for months, but they didn't update the price stickers. It was like that with a few games at my local TRU, Singstar Country Bundle dropped to $9.98 June 1st but still has a shelf tag of $49.99.