You can get discounts on their web site. I think it's a five dollar discount? I've never been there but it's about 1/2 hour from my house. I'll have to go check it out sometime.
I have 3 pacu about that size in my 1/4 acre pond. They swim in a school and seem quite happy. They love floating food, but eat the algae and plants in the pond and do well. Seriously the easiest to keep fish I have ever owned.