When I purchased a used car (though I found out I was not completely legal) I paid 200 QAR at the traffic dept after they checked the documentation. The documentation included the instamara, current insurance and because of the year of the vehicle, the required safety inspection. I paid this as part of the deal in purchasing the vehicle, but that is between the two parties. I paid the gent after the paperwork was completed at the traffic dept., which is what I suggest to you. Once the vehicle is in your name, then pay the agreed upon price. You do not want to give anyone money and then find out you legally cannot purchase the vehicle.
When I purchased a used car (though I found out I was not completely legal) I paid 200 QAR at the traffic dept after they checked the documentation. The documentation included the instamara, current insurance and because of the year of the vehicle, the required safety inspection. I paid this as part of the deal in purchasing the vehicle, but that is between the two parties. I paid the gent after the paperwork was completed at the traffic dept., which is what I suggest to you. Once the vehicle is in your name, then pay the agreed upon price. You do not want to give anyone money and then find out you legally cannot purchase the vehicle.