the fee and process of work visa of turkey

First, you should submit the following documents to the Turkish Embassy in Beijing in person to apply for a work permit and work visa:
1. Valid travel document (passport) (It should be valid at least three months longer than the expiry date of the requested work visa),
2.Completed work visa application form,
3.One passport size photograph affixed on the top left side of the visa application form,
4. One copy of the work contract
The issue of work permit by the Ministry of Labor and Social Security may take 6-8 weeks after the application has been lodged. You will be informed by e-mail or phone when the application is done. When the work permit is issued and work visa application is approved by the Ministry of Labor and Social Security, you must submit the following documents in person to the Turkish Embassy/Consulate where you lodged the work permit application.
1. Valid travel document (passport) (It should be valid at least three months longer than the expiry date of the requested work visa),
2. Non-refundable work visa processing fee (the amount may differ depending on the nationality),
3.Non-refundable work permit processing fee

Work visa is given to the work permit holders and is issued for single entry.

Visa can't be extended when you in Turkey.