Depends whether you want a 165mm Angulon or Super Angulon. I have the latter it's a huge heavy lens in some ways I'd prefer an Angulon for its compact size, however I have a Wollensak 159mm EWA which is similar.
I'd look at completed sales on Ebay, my 165mm SA came with a 10x8 camera I guess I paid $200 for it but the shutter speeds were sticky so it had a CLA. LF lens prices are rising and have been for the last 2 or 3 years as almost no new lenses are being made.
$700 - $900 for a Super Angulon
$100 - $500 for an Angulon, the $500 one is a very late version black barrel last version of the Compur.
Ian