The Hut are selling "Spiderman: Friend Or Foe" for the Xbox 360 for £15.93 and for the Sony PSP for £12.93 (inc Del.)
You can get cashback from the usual sites (e.g. 5% Quidco, making them £15.13 and £12.28)
The next best non-Hut run store price seems to be £24.98 for the 360 version (Amazon) and £15.99 for the PSP version (dvd.co.uk).
You Won't Believe Who's On Your Side.
Team up Spider-Man with famous enemies or allies.
Team Up with friends in 2-player Co-Op game.
Defeat famous Villains and turn them into Allies.
Enjoy Funny Twists on famous Big-Screen moments.