Okay both games are not new releases, but both games, especially PGR 4 are cracking value at £9.99.
Both are on the Xbox 360, both are new, and both are instore only.
They are not in a reduced section, or clearance section, which makes me think that they are probably this price across most stores.
Hope someone else can make use of this. Incidentally, just in case it is not nationally, this was at the Hemel Hempstead store.