This is a deal for the pre order of "DJ Hero" on the Xbox 360 console.
The normal price is £78.49, but if you add PowerPlayDirect voucher code PP-02-DISCOUNT or B4U, you will get it for £76.92. I think this is a good price as the next available pre-order price I can see online is £90 @ The Hut and ShopTo.
Apparently, the RRP for this was supposed to be £108, but I don't think that's likely. The game is not due out until the 30th of October 2009.