There's an "Excellent" condition 150 f/3.5 on eBay from Japan for $250 plus shipping at the moment, which is about the going rate for a decent copy of the three most common lenses - 55/85/150.
On that 85mm with light haze, often the haze is oil residue on the inside of the rear element. The rear element is super easy to remove and clean, so that might be worth a shot.
I've taken apart and repaired several of those lenses now, along with several Six bodies. They are great systems when they are working properly.
Jeremy