Its a problem that happens because AW allow existing profiles to be traded. A Romanian girl told me recently the going rate is around £200 to buy an existing profile from a trader - she didn't say, but I guess the price varies with history and feedback. Not bad profit for something you can set up for free.
Obviously besides that, pimps chop and change girls profiles regularly. But the bottom line is, until AW tighten up their verification and security you'll always run the risk of being conned