Just a thought on the exotic stuff that goes for peanuts on ebay, surely a seller who knows what they are selling knows the stuff might go for far less than it's worth, perhaps the seller has encountered it before, so why would someone sell something like that knowing they may very well be out of pocket so to speak as opposed to selling to someone who really wants the item other than ebay speculators ?
Could it be the seller is a speculator and does not know what they are selling, or could it be the seller is a thief or a fence for a thief ?
I have a full set of early twentieth century ships running lights, built for but never fitted to a sailing ship I believe, people tell me to sell them on ebay, because full sets of the same make and type have in the past gone for over a grand, but it is a buyer's market and things on ebay don't always go according to plan and I have a valuers estimate to consider therefore no way will the items go on ebay, I will wait and sell them to the correct market,when it is ia find it, where I hope to obtain a fair price not a throw away price. Similarly, I would expect a seller of bicycle exotica to approach the correct market in an attempt to sell, not a general market where things can and often do go disasterously wrong, which kind of makes me wonder about the seller, are they looking for a fair price for their cast offs, or are they looking for any amount as a sale is a sale no matter what it is, in which case was the item theirs to sell in the first place.