I ran these on one of my cars for about 4-6 months and roughly 2000 miles. They're as good as new other than the typical Koni paint damage.
Sale price last summer was $519, current price is $686. I'm asking $450 shipped inside the US. Includes two upper mounts drilled out to fit Konis as well as the adjusters (not shown). This is a private sale, not an official Flyin' Miata one.