I am with Hawg and Woodnbow
I believe there is a group of buyers on eBay who don't bother to do any research as regards the value of the item they are buying. It results in prices paid which are above full retail.
I have seen it time and time again.
I started with eBay in about 1995 and it was not like that at that time but soon the venue attracted a less well informed contingent. I collected Britains soldiers, Dinky Toys, LGB trains, First Gear trucks, and the trend was identical. There is a collector's price guide for Dinky Toys and for Britains. Now you can forget about those guides. eBay has jerked prices way out of line.
I just sold my 9 MM dies, mold and sizer on eBay and for used items I was paid more than twice the value of brand new items through Titan. When they sold, I wondered if the major distributers were out. But Titan had everything in stock.
In the end the generous judge would assume that the person who pays high prices for stuff knows what he is doing. But it sure makes it unpleasant for the rest of us. Hawg's word, "frenzy" is probably more appropriate especially when it comes to shooting supplies.
There is much more to say about this but it would be wrong in this thread.
My reading of history convinces me that most bad government results from too much government. Thomas Jefferson