My only beef with the whole trading of sneakers business , is are people only trading for what is deemed equal "by the market" or trading for what they truly like ? I know it didn't happen but If the dude really wanted the LMs and giving up the Frags was worth it in his opinion, I don't think that makes him an idiot. Maybe depends on why you're in the game.
I tried trading a pair of bred lows for Melo 1s and the annoying *** high school kid wanted me to throw $ on top because the Melos were "worth more" . The local FB groups are more of a pain and a microcosm of everything wrong with this hobby.