Unless they can give you documented papers, I would take anything verbal with a grain of salt. That looks like a hypo BCI. Surinames have "peaks" on their saddles which adds or subtracts from the price depending how high and even the peaks are. Also like I said, their tails are bright red. As for dwarfs, there are Hog Island, caulker cay, Nicaraguan among some. And as bcr229 said, most dwarf boas are kept pure as even a large boa isn't really unmanageable. Now as for retics, the new fad is to breed super dwarf or dwarf retics to keep them from getting into an 18ft snake yet still keep the look of them. Plus if you get a "pedigree" boa, you will pay the price for them. Your hypo is nice though. My girl is a normal Colombian but she has the best personality out of all the snakes I've had. I can leave the door open on her cage and she will just sit there with her head resting on the top of the litter dam and relax and loves when I walk by and pet her head or rub her body.