I was sold a guarantee that they could sell my RV for a certain price and paid $599 for that service. The person I spoke with was Nike Reinsdorf. I dropped the price several times and after over a year decided to sell on Facebook marketplace. I had over 20 inquiries in a few days. 3 people came out to view it within 2 days. I had competing bids and sold it for what I was asking on National Vehicle. I never even had an inquiry with National Vehicle. DO NOT WASTE YOUR MONEY OR TIME WITH THEM!