I got my normal from a local petstore, and my anery from
Alex Hue. He was a good guy to deal with and the snake was in great shape. I don't know if he still does Sand Boas or not.
However after getting mine I quickly discovered how absolutely boring they were. They stayed hidden 95% of the time, were aggressive and nippy when handled, and really made for poor pets...despite their adorable appearance.
I believe it was CornCrazy that had some that actually died of impaction from being kept in sand, so go figure. I know mine seemed miserable in the same aspen I kept my corns on.
I ultimately sold mine back to the local petstore. They were cute, but not all that enjoyable. If I want to get another short, stubby, fat snake its going to be a Rubber Boa. They don't require extraneous heating, are docile and quite cute.
You might go over to Fauna and see what information you can find about them over there, as there are more people that deal with non-corns there than here I would say.