New Airstream trailers can run pretty expensive. Even the moderate-sized trailers by this brand will cost you around USD 62,000 to USD 157,000. If you have this much budget, then surely you can go for a new trailer.
But if your budget is tight, the new Airstream cost might be too high. Then you can go for a used model and fix it up on your own if you can do that.
Airstream trailers are pretty durable, and they do stand the test of time. If space is not a concern for you, then the Airstream Bambi pricing might be the right option for you.