I must admit that I love those old Airstream trailers. I even looked at several that were for sale when I was trying to decide what kind of RV to purchase. Unfortunately, the Airstreams in really good condition typically command a premium price and for good reasons. They are well built and, if properly cared for, can serve as full-time or part-time homes for many years. The only ones I ever found within my price range all were old and most had serious problems.
Architect Matthew Hofmann of Santa Barbara, California obviously has talents that I don't possess. He takes old Airstream trailers and refurbs them, often converting them into something more luxurious than what the factory engineers ever thought of. Click on the image above to see a larger picture.
You can see examples of Hofmann's work at http://dornob.com/vintage-airstream-converted-into-homeoffice-hybrid/ and then check out his web page at http://hofarc.com/category/blog/airstreamblog/
You can see the inventory he has for sale right now at http://hofarc.com/blog/airstreamblog/hofarc-airstream-inventory/