@NathanG - I don’t think you have to go for flounder if you really want to eat pomfret. You can find places that import it into the United States.
Black pomfret is one example and they sell it at the oriental market near where I live. There may be places online that you can buy it as well.
I am not that finicky when it comes to fish myself – fish is fish, regardless of the kind. So I wouldn’t go out of my way. However I admit that I have never tasted the black pomfret. I am told that it tastes sweet and has kind of a buttery flavor to it. Maybe if I tried it I would get hooked.