Hey mate expect to pay 7k +. I would worry if you pick one up for 4k as there will be another 4k plus of work to do on it and all the heartache waiting for it and researching. have a budget of 7k and take someone along that knows what they are looking for. If you dont know anyone pay someone who is a restorer to come along and check it over. Once you have found your dream bus you will love it