I remembered Dan's tip when I went to Tottenham Court Road last night; picked up a Micro Anvika catalogue straight away and found the N810 advert with £299 in big bold letters. Then when I got to the till and they tried to charge me £329 I pointed to the advert, the sales girl had to call her supervisor over but he said straight away "yes I'm afraid we have to honour that". Nice one! (this was in their 53 Tot'm Court Road branch, a good walk up the road on the Western side).