i been to marmaris twice never seen a hint of a WG, all the turkish massage were legit
a hotel waiter i got to know told me top end turkish girls were £100 for overnight and would bring to the hotel, and would have to drop hotel security £20 to let in, but wanted cash up front, I declined the offer.
but may have been on the level seemed like a top guy was all inclusuve hotel wasnt that busy and kept bringing drinks over, and had regular chats.
turkish girls are beautiful from what ive seen and not expensive, so maybe an avenue here, but would avoid any back alleys and to much efes if your on the hunt.