Just a comment on the whole pricing of these things used and new:
Friggin' ridiculous!
I looked into manufacturing them in China to sell on Ebay to fund my 3.4 engine swap. Injection molds are $10k plus $18 a set for a minimum order of 1000 sets. Wife nixed the whole idea saying I'd never get my 28k out of it as there's not a large enough market for rollbar inserts.
Anyone here have an injection mold company?