Hello brewtus -- Do you mean the
price vs. condition page on vintageairstream.com? It is certainly a good starting place to try to understand what you have. Improving the condition to command a higher price is a laborious process and truly will not recapture most expenses you put into it. That is indeed worthwhile for someone who wants to own one however
. Mechanical systems like A/C, HW heaters, furnaces, and running gear (axle, bearings, brakes, tires) need to be redone so often that you may not be looking at a goldmine in the current condition.
There are classifieds at these forums. And at
Vintage Airstream Club. I think also at
www.airstream.com. You might want to browse these places a few times if there are similar age/length trailers being listed. Craigslist is being mentioned more and more. These all require you put a price on it. It gets to be like real estate -- will you price it to move or sell only if you make a mint. The latter gets less likely if the unit sat on the axles at a campground for years -- and out in the open at that.
eBay requires some work in defining what you have if you really wish to capture a potential price -- and poorly defined trailers may cause purchasers to renege on the purchase bid. Desperation sales outnumber truly valuable Airstreams on eBay.
Welcome to the forums -- and please feel that any number of questions is perfectly okay at this wide open self-help site! The search function can be useful too.