Guys if you have some knowledge about second hand motorcycles than only buy it otherwise dont buy it. You will get many trouble after buying it if you dont have any knowledge about that.
First .if you want to buy any that type of vehicle than buy that vehicle which has driven less than 20000-25000 km
so that is engine is good to use.
Second. try to buy vehicle from second hand vehicle dealer, and the price they give is also good, And they replace the defective parts, they will also do the transfer of ownership work by taking some nominal fee, So that you dont have to go here and there.
The vehicle you are going to buy should be in good condition first take a ride of that then deal it with the dealer.!