£31.46 with 10% off code(STUDENT10%) when you select FREE DELIVERY.
Don't know if it affects the promotion code but I used google checkout.
Cheapest version I can find the ps3, next cheapest I can see is play which is £39.99.
Taken from website:
Street Fighter IV brings the legendary fighting series back to its roots by taking the beloved fighting moves
and techniques of the original Street Fighter II, and infusing them with Capcom's latest advancements in
next-generation technology. Everything that made the legendary Street Fighter II a hit in the arcades, living
rooms and dormitories across the globe has been brought back in Street Fighter IV.
New & Sealed UK stock