I think we are going to start seeing these kinds of prices more often to be honest.
The OG jazz market has been getting bigger in the past few years with tons of Instagram accounts, Facebook pages, and Youtube channels popping up all the time. The hits these things are getting seem to be increasing significantly as well. I set up an Instagram account to share my collection almost 4 years ago now and there are so many more dedicated pages now.
We're talking about OG records that are only going to dwindle in numbers and become more and more scarce, with people coming into the hobby that has significant money to burn. The 45RPM guy is a key example, in the space of a couple of years (?) his collection has built into something that people with decades in the hobby could only dream of.
The Blue Notes, Impulses, Riversides, etc are always going to be big ticket albums but now the lesser known/niche labels are soaring in price too as they become more popular. I have been heavy into British jazz for the past few years now and records that were £30-£40 back then are selling for hundreds (no exaggeration at all) on Instagram and eBay.
There's got to be a ceiling it's going to hit, right......