Haven't heard of the seller, but you should also remember that with possible hets, the snake might not carry either gene, or only carry one of the needed genes. So you could raise a female for up to 3+ years to get her big enough to breed, and then have to breed her a few times, before you're certain that she doesn't actually carry the gene. Because even if she does have the gene, you could miss on getting a visible hatchling(albino OR pied) because of bad odds, so you'd have to breed several times to find out your possible hets are either normals, or only carry one of the genes each. So you could have a het albino x het pied.. and only get babies that look normal but could be carrying either albino or pied or both.

It's a long project, and I wouldn't want you to get started, then discover later that it might take several years to find out you don't have the makings of the double morph you wanted.

Getting a albino and a pied would at least mean you would know the babies all carry the gene from mom and dad. So all hets, no poss hets. It's pricier, but more of a sure thing.

Good luck! It's such fun anticipating the hatchlings.