You can get a roadster pickup kit (body, bed, tailgate, modeal A frame) for about $5000. It's steel, too. I think the '32 frame upgrade is an additional $500. Check them out.
Thats life these days,everyone wants to get rich quick and stuff is way overpriced in my opinion,but what do I know. If you want used look on ebay, or there are several places on the internet that have a stash of model a stuff one is www.rufusranch.com
But your shipping will cost a bit, the person selling would have to agree to crate the cab and drop it off somewhere for shipping.I would think your looking at a thousand bucks or so to ship one,maybe more.
I met a guy last year that was going to build a 28/29 cab. He had a cowl and doors from a coupe or 2-door and was going to buy the cab corners and back pieces from Howell. Since the pickup doors are taller he was going to cut down the new pieces to match up with his doors and cowl.
The 28/29 truck cabs bring pretty good money if they are in decent shape. I found 2 out west last year and brought them back to TN.