That means deserts will be more rare than other morphs, which may mean their value will be higher. What you perceive as a flaw may actually wind up making them more valuable in the long run.
The males are breedable and the combos look cool so they will continue to be produced in high numbers. There are a lot of people that spent a lot of money on them and will continue to breed them to try and recoup some of that money.

So far there really haven't been a lot of adult desert females for sale. When that starts happening the price on deserts will really start to fall. If I had to guess I would say they will get down to the $100-150 range and then stay around there.