I don't think that is something you have to worry about with Jack. I've yet to hear anything about people having any trouble with Jack's Discus. you could always contact them and see if you can do a local pickup, the worst they can say is no.

Personally I have purchased 3 fish from a seller on eBay called ZenGardens and I've had no complaints about their fish. They are small, about 2.5", when you buy them, but they are great looking fish. They don't have a lot of color when they arrive (kind of expected with their size) but they will color up great as they grow.