Sounds like a unique individual, an anomaly in market terms.
Absolutely agreed. One of those "good gig if you can get it" deals.
We have had a couple-dozen people that I know personally retire early an go to greener pastures.
Lately they tend to field offers between 350 and 550.
These are people with degrees and 15 - 25 years experience though. Most of them are HR types with safety, labor, or training/dev experience.
I suspect theyr'e being systematically head-hunted because it's always one of three (mostly) companies that lure them away.
I don't begrudge them their good fortune though. That's the way it works. I'd be gone too, were I in their positon.