I hardly use online auction sites and know little about how they work. But isn't there a danger shill bidding is sometimes used by a group of accomplices as a technique to inflate the price? The item then reappears later at a genuine sale, with the perception of value duly raised. I have no intention to cast any aspersions in this case but I have reason to believe the £1120 once achieved by one of my Retrovisor televisions was a result of this practice.
Steve
Steve