Used: 80mm f/2.8 PQS Zeiss Planar for Rolleiflex 6000 and Hy6 cameras
The PQS is the faster version of the 80mm which can sync and shoot at 1/1000th and the Zeiss planar is preferred by some. If your lens is only a PQ (1/500th), this would be an easy way to upgrade.
This copy is in very good overall condition, and its been fully tested, but I did note on large spec of dust on the edge of the inside and some small fine dust which is common in Rollei lenses as it comes from the carbon fiber shutter and aperture blades. I don't believe this will affect images at all, but have priced the lens much lower.