The NADA Guides website is at:

http://www.nadaguides.com/

I also looked at the RV Trader Online where you can search for a particular brand of RV:

http://www.rvtraderonline.com/adsearchprocess.html

I didn't see too many used Trailmanors on the RV Trader site. I did look at it for a number of months to get a feel for the range of prices and for what was available in different parts of the country. I saw very few used TM's in California.

I also looked at the old Tretta site for TMs wanted and for sale. That also gave me an idea of prices--I see you also have posted there.

Have fun.