It would require a good partnership with the person you are entering into the project with. It's less a specific animal and more a specific project you are going into - you both want to make the magic kitchen sink morph ball python, or something along those lines. So, you both go in on buying the necessary ingredients.

I am sure ahead of time they negotiate who gets what babies, but what I see as the easiest way to have an animal like that is to co-own a male, and then alternate the years you get it. So for one year, you breed it to all your females, then the next year ship it over and that guy breeds it to all his females.
Or maybe a guy just wants to see a project happen, but doesn't want to put forth the effort himself, or doesn't feel he has the know-how to make it happen. So he "invests" in the project, funding it in a way that is helpful to the guy taking care of the animal, and they take it from there.

If it's an expensive enough animal, it's worth all that shipping every year to have it father offspring. And it may not necessarily be a for life kind of thing - maybe after a few years, one guy doesn't want to do it anymore. I'm sure a trade of offspring or even just a bit of money can end the snake at one home in the end.

Still a scary prospect; you have to trust that the other person will care for the snake properly when it's their turn, and be honest in all dealings.

-Jen