With the various calls for transparency from those making offers via PM, perhaps we should also expect some from the OP too concerning what's happening with this sale? In the 4 days the Klein has been on sale Martin must have had dozens and dozens of offers of the £800 asking price, so is it for sale or not? And if £800 isn't the selling price of the bike after all then I would have thought the original advert is against the forum rules?
Whether it's a bargain or not, a lot of people are offering a lot of money here, and it seems fair to let everyone know the status of the sale.