I got them for a bargain price of £350 plus commission. Spoke to N Burns(the auctioneer) the day after the sale and he informed me the last two mushroom lamps they sold (same design) went for £800 and £900 respectively.
Gary
wow that was a good price you got them for, i can remember them making 1200 plus at one time, good investment im sure, i sold one in june 09 it made 800 plus on ebay, i paid 320 for it about 3 years before that, ive still got a couple of mushroom lamps, and a few other lamps, but sold off a lot just before prices went down, might have to start building collection up again