I cleared out a dungeon recently in Arena and part of the loot I got were 2 Plate helms. As a Battlemage I can't wear them, so I figured I'd sell em. Back in town I go to the nearest store. The vendor gives me 600 or so gold for one, and 7500 gold for the other. There was no difference between the helms as far as I knew. I was wondering if the amount of gold you get is randomly generated or if I just got lucky with a glitch.