New Coan Converter

I think guys are apprehensive about used converters. I was but bought one used a few years back. Paid 425 for it. Last month it cost $516 to restall/rebuild for the new. Not to bad when a new one is $1350 from the guys that reworked it.
Yes thats a good point but this particular part is not as abundant in the adds and being traded as I would expect and I know it’s not because everyone is happy with what they put in initially. So where are all these converters?