You’re getting a lot of good, if fragmented advice, it is up to you to synthesize all this prior to making a move. I am certainly no expert but I do have some experience, we do live in Tucson, which is what triggered my read of your whole post in the first place .
We began RVing five years ago with the lance travel trailer. It was a good little unit it served us well.
In 2017 I got the bug to have an airstream and did an extensive search both locally and online, Airstream forums classified, finally settling on a unit that was located in Ontario Canada. 2015, international Signature 27ft, Front Queen. 30 amp, like new condition with weight distribution hitch, 16 inch wheels with Michelin tires, rear camera and a number of nice additional decorative appointments.
After purchases I hired Marvin Braun, Precision RV, to do a full-Monty solar install, http://precisionrv.com
. 600 watt panels on top, 600 amp hour lithium ion batteries, battery management system, EMS surge protector, 3,000 watt hybrid invertor/charger, weboost cellphone amp/booster and WiFi amp booster. Marvin, in Casa Grande AZ, is among the best in the business a true craftsman in his install as well as a RV solar expert.
In addition I had the rig towed to me from Canada by putting it to bid on uship.com. This too was a fortunate decision as Uship was first class and less expensive than going to pick it up. I also hired an RV tech inspector near the prior owners location which gave me added confidence in buying a rig sight unseen.
So far in the 15 months of ownership we’ve spent 140 nights in her, towed her over 6,000 miles and had only a couple of minor maintenance issues.
The sticker on the 2015 from the factory was nearly $91,180, This didn’t include the wheel/tire upgrade, camera system or hitch and extras.
As previously mentioned the “bugs”, had been detected, corrected, while under warrantee. The prior owner, a German Engeer and his fastidious wife, (I use both terms as complements and he joked with me about it), had treated and cared for the unit with unmatched love and devotion)
With all these additions we can live, off grid Boondocking, in similar manner as we live at home or in a full hookup park.
My total expenditures are still considerably less that the original Airstream Sticker.
In summary, good value is out there, it’s up to you to perform your due diligence both in product knowledge, understanding and comparable other units currently on the market. This can be an exciting, fun “hunt for the prize” or a first class pain-in-the-ass. If it’s the former you’re more than likely going to enjoy Airstreaming, if it’s the latter, forgetaboutit.,LOL RVing is not an enexpensive way to live, it’s a lifestyle choice, one that can be most rewarding and challenging, all at the same time. If you’d like a more thorough discussion and visit on all this PM me and we can talk on the phone. All the best in your quest.