Color and markings are totally unimportant and not an indicatio of the quality of the breeding. They are purely a matter of preference.
The orthopedic problem and general lack of quality are of more concern. Bone/structure problemd can be passed to the pups, and can result in various problems like early arthritis, lameness, lack of stamina, even growth problems requiring corrective surgery. The lack of quality of the parents, combined with the ridiculously low price, indicates a breeder that either does not know what they are doing or does not care - either way corners have been cut, steps have been missed, and you are increasing your chances of ending up with a puppy with problems whose breeder has no further interest once they have the cash in hand.
How much does a puppy cost? Purchase price, adoption fees, discounts, expensive puppies, cheap puppies, and a bunch of other words. | Ruffly Speaking