Its pet buyers, not breeders. Its specifically because a paradox/chimera cant be specifically bred for that makes them rare/valueble. It was definitely a collector that would have bought is my guess.
Edited to add: chimeras and paradoxes arent the same, but generally neither is genetically passed on, so it increases rarity and uniqueness for those buying pets. If skittles has been consistantly producing chimeras, then that would definitely explain the price.