Saw this game in ASDA Eastleigh for £19.97. Still £24.91 on ASDA.com. Not sure if it is nationwide. Cheapest I have found so far. Not sure if it comes with a free Blanka T-shirt though (like the one on Asda online)
Super Street Fighter IV, the follow-up to the critically acclaimed Street Fighter IV, further redefines the fighting game genre with classic 2D Street Fighter fighting action, a host of new and returning characters, more advanced online gameplay, new ultra combos and much more.
Super Street Fighter IV adds new Ultra Combos and advancements to the state of the art online matchmaking and online gameplay introduced in Street Fighter IV with numerous additional features. Super Street Fighter IV takes many of the groundbreaking features introduced in Street Fighter IV and refines everything to deliver the ultimate vision of Street Fighter to fans the world over.