lol waaaay overpriced. considering theres no pertinent info about the tank or other items i wouldn't pay more than 1500-2000 for that tank...and only if i was going to do an insane reef tank.
the dude will be desperate to sell it so just leave him your number and dont sound at all to excited about it and when they need to get it out they will call you and then you can charge them to remove the trouble from thier place LOL