I don't get it--why wouldn't you want to breed quality fish? If all it takes is one initial investment it will pay off many times over in the future. There are plenty of domestic breeders that aren't very expensive--you could probably find one locally if you tried hard enough, by looking up your local aquarium societies and posting ads on craigslist. You could also go to a betta show and bid on bettas you like in person, that way you don't have to risk shipping at all.
I don't understand why your goal would just be to send more of the same out into a market that's already saturated with unwanted fish. Wouldn't you want your stock to stand out from the rest?