Re: "Grey Lady" -- starting at US$8,8888 :)
Agreed, as per my post last week about "the market" for Nagel work.
MUCH more difficult to find collectible works now, and what you could have snapped up for $350 a few years ago are often closer to US$1,000+ now.
I don't know that we're looking at decades, though. The market is rising daily. Not always consistently, as we see on the canvases, but relentlessly upward nonetheless.