Hey man, I never thought you were devious. Those people just see the scammer side of everyone.
I do think you are pretty dumb/crazy* though. $150 for a really shitty cardboard box is not "very reasonable" just because some other idiot paid more. It's insane and if you were in a better state of mental health yourself that would be obvious. What if the other guy paid $1000? How about $5000? If the last eBay auction was a Bonk box for $250,000, would you buy mine for $800?
Sometimes *you* have to be the one that just says, "This is nuts. I'm putting the brakes on this now." If you can't, professional help exists. Seek it.
* No, not the cool kinda crazy, you wish. The tedious kind of crazy that has you pissing in bottles and alphabetizing your socks.