It's a pretty good price. I bought a 10" NTT for $120. I love my NTT because he's always been stable and active, and always comes to the front of the tank when I'm nearby. Plus, he eats pellets. If the guy you bought him from has already pellet-trained your NTT, that will make growing your NTT into a monster much much easier. NTT's that are still on live food or only eat shrimp don't grow as fast as the ones on pellets IMO.