150 us dollars at the lfs but I was looking around on the internet and for the size it was about right. Kinda scary at first with the big S&S in there(expensive snack eh) but they get along fine. The Tusk stays out of the way and the puffer totally ignores him.
He's very comical as well. A great fish imho.
They even say "keep with puffers" in most of the documentation I've read. They eat the same foods, like the same environment etc. Get really big and beautiful but leave other big fish alone.
I'll take a pic tomorrow and post it for ya. The two of them make a great big SW predator tank imho.