Yes, that looks like an Asian Water Monitor for sure. I used to be into reptiles and this big guy definitely looks like an AWM. He just had the munchies is all lol. How do you get that thing out of your store. There mouths are like razors (and full of nasty bacteria) and they can whip there massive tails very fast and cause lacerations. If I worked there I would be like oh look it's time for my lunch break lol.