Far too many people let eBay set the standard. First off, eBay can be manipulated -- it's not legitimate, but it happens. And secondly, there are other markets than eBay. When I see items end for prices higher than dealer pricing, I get a chuckle.
Look back through the forums here and you'll see plenty of Craigslist posts of Amiga equipment for MUCH better than eBay pricing. Granted, some are more as well. Unfortunately, I don't see much on this side of the Mississippi much, all of the good stuff seems to be in Cali.