automatic 206 malfunction

Hello, I have the 206 model automatic 206. Although I recently bought D or R. The car did not go. Then I somehow solved the problem and moved the car. He said that he came from the gearbox. He said that there is no problem at the senoid. We took him to an auto master. I asked for the price. He responded as minimum 2500 and maximum 3500 TL. Of course people are experiencing a shock. Price came to me too much.

Now I want to get help from you.
1) There is an automatic gearbox master you know in Izmir. 2) Speaking gearboxes are mentioned. How efficient are these? Is there any place I can find in Izmir? How much will it cost me for price?

I would be happy if you answer all of my questions.