I'd like to take a step back from the gruesome details of eBaiting sellers & shill bidders, and talk about The Big Picture.
The real problem here is that no buyer knows what to pay.
If you know what to pay, life is easy: you set your bid; you win, you lose; either way, you're done.
But buyers almost never know what to pay.
Nothing stops any IRL auction from using shill bidders, especially when the item belongs to the house. Just as on
ebay, there is little/no cost to 'awarding' an item to their own winning bid and 'canceling' delivery.
Nothing stops any online dealer from holding an 'auction' which is little more than a price list in which the buyers get to compete against each other.
Dealers at shows & in storefronts have it a little harder, but they can still show something they know little about, wait for someone to express an interest, and say "I need to show that to someone else before I can sell it to you, but you can look at it" as a way of testing the price waters. Can't do that too often, but it can be done now & again.
What buyers need is a credible resource that lists items & prices. We could call it a 'catalog'. This would serve as a benchmark, against which buyers & sellers could argue why any individual item should be priced higher of lower.
Such a 'catalog' would go a long way towards establishing & maintaining an orderly market.
Q/ Perhaps one of the big album publishers could take this on?
Cheers,
/s/ ikeyPikey