I saw this at Macquarie Park GAME store on Sunday. I guess it's Australia wide, and don't know the expiry. Can't find further details on the game website.
They have a good amount of games across all platforms I think, certainly 360, PS3, Wii and PC. Might be limited to DS and PSP accessories.
Basically Buy One Get One Free, with selected new and used games. I was looking at PS3 games. Preowned they had Midnight Club, Kane and Lynch 1, Haze for around $35. New they had Sega Sonic Kart Racing for $70, Call of Juarez for $60. Blur was one of the titles, but $99 I think. I was tempted but didnt bite.
Good deal if its available at all stores.