This is the SBM-300H-3GB model. Reduced from £149.99 to £74. Bargain.
Next cheapest that i could find was £91 on amazon (and there is lots of people who have been sent the one without heat too)
Code is ZG238 Which gives you £10 off your first order - It actually mentions it on the page so should be good (I know the £30 off codes are a bit dodgy). (74 -10) + 3.99 postage = 67.99.