Rosco,
I paid $150.00 for her, I think it was a sale. Typical prices I've seen are $200 to $275 range. She is in a custom made tank that measures 84"X30"X18" this gives a lot of surface area to move, you don't need much depth. She shares her tank with 3 yellow sting Rays, they all get along very well. One thing the shark seems to need for comfort is some where to hide. I have a rock cave that she spends most of her time in, but she knows when its feeding time and she'll venture out in the evenings. I feed the shark and the sting rays mostly silversides. I try to give them a variety with krill, squid, and frozen shark formula. The main things you need to beware of in choosing tank mates is one that the shark can't eat them and two that they don't pick on the shark. I've heard some angels will pick at the eyes of the shark. I use a live deep sand bed with a berlin skimmer(I would like to replace the skimmer I wouldn't recommend them). With 4 large fish they make quite a waste load so obviously frequent water changes are important. I hope this helped, if I can be of any more assistance let me know. Good luck!