Hi this is my first post so take it easy on me.
HMV currently have a sale instore with Guitar Hero 3 for £35. However in FEB issue of EMPIRE magazine (page 22) there is an advertisement for HMV but they have put World Tour image for £35 by accident instead of GH3.
Just take this ad to pc world and they will price match plus an extra 10% off taking it to £32.50. The great thing is that they phone HMV only to check stock not price and with the game still popular there is always stock so they have to sell it to you.
The ad shows the Wii version but it says available for PS3 and xbox and i had no problem getting it for ps3.
Hope this is ok,
Enjoy : )