Did he give you the rego papers? As most the info you asked will be on that. As for price that is really hard to say also as cars or almost anything is only worth what someone is willing to pay, I know thats prob not what you wanted to hear, sorry. If you need more help we as a community will do our best to help. If you are thinking of selling sometimes its better to sell as is cause putting more money into something can sometimes be a dead end and not gain any extra funds maybe even loose more.