Yes, there's quite a lot of that.... I can sort of see people trying to claw back some of the cost of "upgrades", but nakedly trying to flip something with an upcharge when it can be bought new for less....
You'd think so, yes.... tbh, though, I think eBay are so big now they don't care... and they've long wanted to get away from little guy sellers to the big low price, high volume unit shifters, so maybe it's not a market they care about not losing.... shame, though. The number of even fakes now no there are shocking.