Got mine in Yuma, AZ in late august for 29.92... I thought it was a fluke, but then I saw this thread.
My local Wal-marts have a tendency to drastically reduce the price of an item they need to get rid of before they can recieve a new shipment (or to clear space for items that won't be restocked). Once I picked up a red octane wireless ps2 guitar, that reatiled for $59.99, for $11 (last one), and came back 2 days later to see they were fully stocked and back up to $59.99. I have found other awesome clearance sales there too, like an unopened copy of Suikoden 2 for $29.92 ( that I immediately sold on ebay for $150 ), and most recently they had copies of Xenosaga Episode 3 for $19.92 that I was able to sell for $36 on amazon zshops.