Amazingly my local Best Buy (Chula Vista, CA) still has these in stock almost two years later. There was a previous thread when it was still $29.99 but I was unable to find any posts on the price drop. The 360 may also be $14.99. Use the store locator to see if the clearance section of the stores in your area.
This store also has the Saints Row Platinum Hits Double Pack for the 360 for $9.99.