"Discount chain K-Mart began selling the Xbox 360 Wireless Adapter on Dec. 4 to its customers at half the MSRP due to a pricing error in the computer system.
The wireless adapter, which allows Xbox 360 owners to connect their console to the internet without cables, rang up for $49.99 rather than the in-store price of $99.99.
Microsoft began selling Xbox 360 games and accessories in advance of the Nov. 22 launch at participating retailers.
Bargain hunters spread the word on internet message boards and soon after the item quickly ran out of stock at nationwide locations.
The item now rings up at $99.99.
Pricing errors are typically honored on a case-by-case basis, though most internet price errors are not honored by e-tailers." [
more]