If you go on facebook and join the RV pricing and values page. You can order a professional appraisal. I just did this with my new to me 2015 Phaeton. The appraisal gave me actual cash value wholesale/trade in and retail. The appraiser advised me to offer 10% over cash value and go up from there to a maximum of 15%. I feel like I did very well on my purchase 2015 40AH very low mileage all electric coach $ 195,000. I was also told tag axles are not selling very well. you might be able to get a great deal.