Well, I tought very vaguely in that, and only did seriously for a couple of models that went too bad for include them in my collection. I don't have the ability of doing so accurate and well done models as the big brands does, and I've did these figures just to fulfill holes in my own collection.
You must take in account that SuperSculpey is a brittle material and items can be easily damaged during transport, unlike the plastic used by big brands. Also, shipping cost from Europe to USA are stinging expensive in the last years.
If despite all that you're really decided to buy something, I could think do a commision for you - I would like if you choose a not too big and not too difficult to sculpt model