You don't see endler guppy hybrids selling for much. I think people are going back to more of the old pure strains.
You will have your work cut out for you trying to get a mutt breeding pure. I think the part of it price wise at least is anybody can dump them together in a tank and they will breed some interesting looking fish. Healthy and pretty but still mutts.
Mmmm....Okay.....I am just looking for something interesting to sell for a jacked up price, something that you won't seen in a pet store everyday