I was trailing some of these for a while, a Ukraine seller had one on sale for around $200 18 months ago; I don't believe it sold.
They're interesting lenses, but obviously the more recent Voitgländer s-mount range have overshadowed them.
Edit: I have seen these go for over $400 three or fours years ago, as they came out of the woodwork on eBay. I think since then prices have gone down. I of course concede that people like kevincameras will still be selling them for $400. There are plenty of rare kiev items which are priced high, come up on eBay again and again, and don't sell.