I have a 2013 SM066. If I were going to buy a used one, the first things I'd replace would be the cooking grids (5 ea.) at a cost of $200 - $300 depending on nickel plated or SS, and the temp probe (about $35). So figure that into your asking price (sorta like putting new tires on a used car). I note the new ones are listed at $1900., whereas I got mine for $1800 from Firecraft (now out of business). So the list prices haven't gone up much. If it's been kept out of the weather and the controller has no problems, and the inside isn't too cruddy, I might ask around $800 or so, OBO. But clean it up really really well before you show it to anyone. Just my $.02.