I know my best friend runs an online bdsm bookstore and she uses:
www.webstream.net
888.932.2333
info@webstream.net
She loves their shopping cart, but again, she sells online e-books, so I don't know if they can help you out or not and currently they are going through some down time as they are located in Ft Lauderdale Fla so the power outages are damaging.