I look at the classifieds on Fauna & FaceBook for pricing. They will vary based on the snake's age, sex, weight, proven breeder, etc.
Yes compared to other morphs because they have no value as breeders. Desert female eggs are also infertile and many females do end up dying without prompt veterinary attention. I'm also new to breeding and wouldn't dare attempt it with a desert female, I don't think it's fair to the animal to try when people with so much more experience can't make it happen. It's not just the females, desert males are also getting pretty cheap considering how long ago the gene was found.*Side question*
I've heard that desert females die when they are gravid but still make wonderful pets. Is this true and would that make female tigers fairly inexpensive?