There's no quick and easy return on your investment with ball pythons.
Not only do you have to produce quality animals, you have to have built up some sort of reputation in this hobby in order to gain some level of legitimacy.
I can't tell you how many people I've witnessed want to sink all their money into what they thought was the "hot morph" flavor of the month, only to go quietly into the night, never to be heard from again.
Whatever might be "hot" right now, probably won't be "hot" by the time you raise it and breed it and produce babies.
If you truly love ball pythons, don't get into it expecting to make money. Get into it because you love it, and work with what YOU love, not what you think other people will love.