Use code FTSL15-1 to get it at this price. If you have already used the code (i.e. for red dead redemption), just register with a different email address.
Didn't have a problem with Tesco on my first order. They delivered red dead redemption on release date
PS3 link: http://www.tescoentertainment.com/store/games/-bioshock-2/8:477199/