There is a service in UK called Gamstop. Gambling addicts can register their details with Gamstop and they will immediately be self-excluded from every UK licensed gambling/casino website overnight. No more gambling for them.
Except when their illness gets the better of them and they start googling "Non Gamstop Casinos"
Now they're illegally sent to offshore casinos to get scammed. Yes this is illegal - you can't promote foreign, non registered casinos to UK traffic. And it's pretty undeniable thats whats going on when "non gamstop casinos" content is going on uk drops.
So this temporary situation, and at least 2 more buyers jumping on the bandwagon, has massively inflated domain prices to something we've never seen before, and will never see again.
If you don't care where the money is coming from, get your seo domains listed asap