When we sold our MA plate car we and the purchaser simply went to the Noter with all the paperwork including the insurance, we each signed a document (don't sign until you have the money) (the best was to get the moeny is to have him/her transfer by mobile into your account, and then check that it has arrived by mobile whilst in the noters). then it is up to him/her to sort out the plate change at the trafik dept. I hope it goes well for you.