For males, alas, the answer is "not much". Nobody wants to prove out a POSSIBLE het male. I gather most breeders wholesale their poss hets as normals? Anyway, I sold a 66% poss. het male lavender albino for $30 ("normal" ball python pricing), to a woman who works at the university with me. (Which has actually worked out great, because she caught the ball python bug, and so did her husband...) But his 66% poss het little brother still doesn't have a home.
Females you can usually get a little money for. 100% hets are selling for ~$200. I'd probably ask for $50-$100 for the poss. het females, depending on how quickly you want to get rid of them.