The "Managers Deals" are where you tend to get the real bargains at B&Q and there are usually the ex-display models. I guess that is why yours was so reasonable Ewan. A couple of years ago I managed to pick up a Weber Q1200 with stand for £35 because it was missing the drip pan holder - which cost me £35 to replace. You just have to be in the right place at the right time and be lucky.
That's a great deal - I got mine this time last year for £95 which I was happy with.