Cl is definitely not the place to look for hets regardless of the species or dwarf or super dwarf animals, when you are looking for something as specific as a SD Retic you need to find the right breeder that works with those animals and there are not that many however Travis is one of themhttp://www.traviskubes.com/
Buying from a REPUTABLE breeder is far more important than getting a good deal because more often than not when you get a good deal especially from Cl you get what you pay for.