Happy to find this thread as I've noticed the same and would like to vent. The entire used ham market seems to be artificially inflated.
I've been looking to purchase an ICOM ic-7200 used for a couple weeks. Every listing I have found on qth, eham, and qrz have been listed as at least a couple years old, missing most of the original documentation and accessories, and get listed for $40 less than the new price ($740 used vs $780 new from hro, gigaparts, universal radio etc, all with free shipping). The best part is they have the nerve to state that the buyer has to pay for shipping as well. They all sell within a week.
I've seen ONE get listed for a sane, used, depreciation-concious price ($650), and it sold in an hour. In any other tech related hobby I've been in, even that price would be considered too much for something several years old and out of warranty.
So I go to look for one on eBay and see one with a bid at $500. Not bad! The seller admits it's several years old and doesn't have the original bag of spare connectors, but oh well, it's a good price, so I watch it.
When it gets close to the end of the auction, four people start bidding on it. The current bid is now $10 HIGHER than the new price on hro or universal radio, plus $20 for "economy" shipping. WTF! All four bidders have put in bids above the new price, so it's not even just one guy falling for this. They're all in the US too. Did I mention the auction has 12 hours to go and they're still bidding back and forth?
Can someone explain this stupidity to me? After witnessing all this crap I'm just going to spend the whopping $40 extra to buy one brand new, in a brand new box, warrantied from universal radio or hro. I mean why not, it's quite clear I can lose the box, use it for several years, then sell it and make a PROFIT!