65/8 and especially 90/8 Super Angulons are very common and widely available, I would not pay over EUR100/USD150 for either. Great compact lenses you cannot go wrong with when using on camera with separate viewfinder.
YMMV but at least for me trying to use them with ground glass is whole different story unless done in the middle of the day with lots of light. For GG you would need 5.6 SA, or even better 4.5 Grandagon, both of which will probably fall into circa EUR350/USD450 price range and are much more heavier and bulkier.