Hi gang. I've got a gently used Aeron chair available for San Francisco Bay Area pickup only. I bought it from my former employer in one of their liquidation sales for employees -- sign of the times! In the last few weeks, these have gone for between $399 and $600 on eBay. For my home theater buddies, I'm willing to let mine go for $365 -- local pickup only, please. I'm pretty sure it's a size B (there are two dots underneath the top lip that indicate size). All the adjustments work great. The list of adjustments available on this model is: Seat Height Kinemat(R) Tilt Tension Arm Height Arm Angle Lumbar Depth Lumbar Height Tilt Limiter Not available on this unit: PostureFit Adjustment Forward Tilt Check here for the complete list of Aeron adjustments: Aeron seat adjustments Let me know if you have any questions. Feel free to drop by and try before you buy.