Only used a handful of times for a non-woodworking project is a Rockler 28"x40" T-Track tabletop with 17 Rockler Mini-Hold Down Clamps, one Rockler Long Stop and two Rockler Bolt Down Clamps.
As you can see in the pictures, it's in near perfect condition. There is not even a scuff on the table or on any of the clamps. We had used it for a project to hold glue jigs in place while parts cured. That was a while ago and we have no need for it any longer.
Over $500+ if you were buying new from Rockler and willing to let it go for $350 for the happy woodworker. Item is located in Corvallis near Highway 34.