Picked up these for £2.50 at a charity shop as I was very interested in the Xbox live points case, it has Call Of Duty 4 Modern Warfare inside it. : r/xbox360
Microsoft Xbox Live - Xbox 360 point pack - 4000 points - Walmart.com
Microsoft Points (Concept) - Giant Bomb
Best Buy: Microsoft 1,600 Microsoft Points Card for Xbox 360 56P-00001
Xbox Live Microsoft Points Prepaid Gaming Cards for sale | eBay