I've meet with Dr.Erdogan himself for consultation and I believe everything posted about him is exaggerated. Let me tell you what I've observed during all the meeting.
1) He does not ask you what you expect or want. He simply begins the conversation with what he can do and want to do. It is like that your plan or request in mind does not matter to him.
2) He is all about advertising. I mean, when I was waiting in the lounge I had these papers to fill up. First page is about your situation but second page is completely about "where did you hear of us" and there a lot of forums around the world listed on the paper. This forum is just one among the other over dozen forums.
3) Take a real, I mean real, look at the Before/After photos. In before photos, hair is wet and combed under bright light in order to show the scalp beneath the hair. When you look at the photos, you think "Wow! My situation is really worse than I've thought." However, in the after photos, hairs are completely dry and bulky as if it's adjusted. Not wet, not combed to show scalp. So, it seems tricky to me. Photos are not taken under equal conditions.
4) He is extremely picky. He cares about foreigner customers more than Turkish customers. In fact, his website is in almost every language except Turkish. You know, there are forums in Turkish for people in Turkey. They think of Dr. Erdogan ridiculously expensive. And most of them were turn down by the doctor himself with any kind of excuse. It is like there is a standard to be a patient of him.
5) Many people have written about the pill issue. He would want you to take Finansterid, Minoxidil and etc. before the surgery and want you to use for regular long period after the surgery. He, then which is the issue, wants you to use the pills forever. So, 2 years after the surgery, if you decide to quit all pills and sprayings, you will face some consequences that you may not like. Basically, you are chained to pills or he doesn't accept your case.
These are only my opinions and observations about his work. I've read and viewed a lot of cases of him in my quest to find good doctor for myself. I think the best ones are in US. Turkey is not a hair-transplant paradise as much as you think. If you would have known Turkish and read the comments written by locals, then you would understand.
I hope I've helped.