They're worth more than you think
Here my story: I bought a new Airstream from the factory in February, 2006, a 2006 model, Safari 25' Special Edition, listing for about $55,000. I paid a little over $44,000, a very good price at that time. I sold that same trailer a year ago this month for $36,000. It had had two USAA insurance claims, one for about $14,000 and one for about $12,000. These were legitimate claims, but USAA paid for things like a whole new roof due to cosmetic hail damage, while no functionality was affected. I only spent perhaps $4,000 on repairs. The guy who bought the trailer from me couldn't have cared less about some minor hail damage.
I advertised on the forum here and on craigslist. I only wish everything I ever sold on craigslist would get people from all over the country clamoring to buy what I was selling like that Airstream. I could have easily sold 10 just like the one I had. My advice: advertise a high price! So I actually made a substantial profit on my trailer after having used it for 9 years. But, one reason I sold it, was a calculation that if it was involved in serious car crash, USAA would probably have given me around $5,000 for it. Insurance companies use NADA data for wrecked trailers, NOT real world transactions.
So, even though I'm no longer a trailer owner, my free advice to Airstream owners is this: don't think you will get a fair price from your insurance company in the event your trailer is totaled. I'd say you'd be lucky to get even 1/3 of the value. You are basically self insuring without even knowing it. On the other hand, if the insurance company doesn't "total" it, they will pay a huge amount to repair it. In my experience for a newer trailer, the damage needs to be not much more than about $15,000. I now remember on that first big claim I had that they said it was on the edge of being totaled but they wouldn't total it because I didn't want them to, was a good customer, blah, blah, blah.
Good trailering! I just got sent a link to this thread because I had signed up for it long ago. No more postings from me now that I "ain't got no trailer no more".