All that sounds about right. Every once in a while I call one of the local companies and ask if they have any old cabs they want to get rid of.
They *never* have any....they tell me they just gut them, put in updated bits, redo the exterior artwork, and lease it back out. They refurb them constantly and almost never toss any.
The ones they do toss are usually so damaged it would be far easier to build one from scratch than to try and repair it. I'm talking ones that are either water or fire damaged, or literally falling apart with little hope that you wouldn't have to remake just about every part.
Eventually I gave up looking and just built my own. I figured if I kept waiting around to find a cab I'd never get it done.