Found this on ChoicesUk at £9.99 (£11.98 after delivery charges).
Cant remember seeing it this cheap before.
Based on the acclaimed design of the Xbox Controller S, the Xbox 360 Controller features an extended nine-foot cable and an improved ergonomic design. The centralized, glowing Xbox Guide Button grants you quick access to your digital movie, music, and games libraries. The ultimate in gamer flexibility, precision, control, quality, and comfort are all yours.