for sure, the most recent was a guy on german ebay selling a load of gen 1 m-frames, in an array of crystal frames and hybrid lenses...he had like 12 different pairs or so....i asked him if i could buy the lot for one price, he came back with £200GBP....at the time, with like a day to go, he had no bids on any of them so i declined, in total, they all ended up going for over £350GBP...
such is life, thats the risk and fun i guess of auctions!