Looked this up on their site and it's £65 but as you can see from the photo it's currently £49.99 in the shop. Woohoo! Or....woo-woo...
00 Gauge Electric Train Set
•TrackMat 1600mm x 1280mm
•Starter Oval Track & Track Pack A Layout
•Everything to Get started!
•Complete starter Train Set
Not sure if compatible with Steam.