Turkmenistan
 

Hi ;

Today i found this info at Turkmen Foreign Ministry web page.

Owners of vehicles entering Turkmenistan are to pay the following duties depending on the load carrying capacity of the vehicle:
* a motorcycle: USD 15
* a passenger car: USD 30
* a bus: less than 12 seats: USD 25
* 13 - 30 seats: USD 50
* more than 30 seats: USD 100

When using private vehicles, an international driving license is required, as well as ownership documents

Hi usl
It cost close to 100USD to get me, vicki and the bike over the border from Uzbekistan. Some of the charges were legitimate the others to get the process done in the same day!