"The Flesh Merchant" (or "The Wild and Wicked") is fairly typical of 50's exploitation cinema in that it denounces a moral evil (in this case, young, innocent girls who are tricked into prostitution under the guise of becoming models) while at the same time titillating the audience with scenes of scantily clad women (and even a quick flash of bare buttocks). That being said, "The Flesh Merchants" is one of the more interesting films in the grindhouse genre. This is largely due to the acting, which is above par for most films of its kind. Lisa Rack, who plays the prostitute sister of the young innocent ingenue, is especially good. She infuses her dialogue (and a couple of sizable monologues) with a lot more fire and expression than entire casts of other low-budget films, and makes you sit up and take notice (even though a lot of the dialogue is pretty laughable). It's a shame that she doesn't seem to have any other film credits, because she certainly could have gone places.
All in all, this is one of the more watchable "Adults Only" films of the 50's. You can certainly do worse. I know I have.