Man, 6 bucks for a 6" PS, if the demand was big enough it would be profitable, but NY state with all it's tests would make it prohibitive unless you were a big operation.
The guy I was getting my trout from is done, the state would not work with him on required tests even though his water comes from Artesian springs. That trout farm had been there since the early 1900's.
BIG GOVERNMENT IS THE PROBLEM !!!!!!!