I suggest you show pictures of the front and rear elements & mount (w/o caps). Also try to show the aperture blades with it stopped all the way down so that the prospective buyer can see their condition. This lens is known for getting oil on the blades.
Nice price for the combo, but you need to sell it better.
Most folks who use macro lenses focus manually and not with autofocus. Having a manual focus macro lens is just fine! This remains one of the sharpest macro lenses ever made. I still use my Micro-Nikkor 55mm f/2.8 that I bought in 1982! If you want a macro lens you should look at this one!
This is the lens that lives on my F2A. It is a great piece of equipment and works just as well on some of the newest digital bodies. The asking price is reasonable and if I didn't already own two I would seriously consider buying this one!