Brian -- Where were you last fall when I bought one of these? You are offering a great lens at a very fair (great) price. I just thought I'd pop my 2 cents worth in. Best of luck to both you and its new owner.
For whoever gets this lens if you add the Lee Filters SW-150 filter holder and use their graduated NDs, you've got a masterpiece panorama camera. See the attached photo taken at dawn in the Andaman Sea between Malaysia and Sri Lanka. The camera was a D800 and the angle of view is a whopping 114 degrees!