Considering a current production G80-1800 with lasered keycaps is a similar price retail... and it's hard to find them with not blacks. I would say it's hitting the upper limit on a fair price for it though.
There are subtle difference in some vintage switch. Cherry has made some small change in spring weight and some other tiny details over the decades. I had some old blues from late 80's that had a black instead of clear click part of the stem that seemed to be less frictiony for instance. I have confirmed that some very old blacks have a slightly lighter spring and less of an angle on the legs that hit the crosspoint. They are tiny differences and probably only noticeable for those that look for them. The difference in feel is very subtle and could be hard to notice side by side on same board.
Oh, and by the way the Dolch case on mine a couple of you were interested in arrived with a large all the way through crack under the arrows, so I just tossed it.
