Appreciate the responses. Unfortunately the TT we're looking at is a 2008, so the published weights are suspect. I'm well aware that even when weighed at the factory, a trailer is really unloaded and is lite as it's ever going to get.
However, if it's actually run across a scale, the weight of all the add-ons are known and can be calculated with some accuracy.
As for the published weights in the brochures and listed on the chart behind a cabinet door, they can easily be 500 pounds off. that's what happened to me when buying a '98 Wilderness "lite". All the printed literature showed about 3500 UVW. After being able to barely tow it home, I headed to a scale and found it weighed 4170. Can't believe I was so stupid to accept the manufacturers estimates, I've only been towing for 25 years and shoulda known better. Will I ever learn? (we did make $500 by cleaning it up before selling it four months after buying it. so all was not lost).