Just for the record (and we've been fielding this discussion for several years now), we didn't set out to make this toy for filmgoers, really.
From our CEO: "The “Vamp” product was not designed with the film series in mind; rather, the idea was to simply create a general vampire-themed toy and have our consumers use their imaginations to create their own specific fantasies. As such, Tantus has never targeted moviegoing fans as the consumer base for the “Vamp,” and it never marketed it as a “crossover” product."
Honestly, I think the reason the toy still sells so well is that it's a terrific shape. Tantus used to have a toy called the Sire, that used the same mold and was an amazing design. The head is really pronounced, so it kind of hits the G-spot really nicely, and does so better than most realistically shaped toys. We even used it in a kit, if I recall correctly.