It's all a bit of a leap in the dark isn't it! We made the mistake of trying to protect ourselves by using a totally independant English Company, operating in Turkey for our legal stuff. We ended up getting ripped off by them, and dispensing with their services half way through. So we relied on the services of our agents Turkish solicitor from then on, and everything went through quite smoothly. If your agent comes highly recommended and you've spoken to other happy customers, I should think you will be fine. It is normal in Turkey for both sides to use the same solicitor. Good luck!