Is this what is happening from all sellers of liquid nicotine concentrate?
Sooner or later, most likely. Not everyone has issued an official statement yet, but that's what I'm expecting to happen. Person-to-person sales will still be available from some vendors, like LiquidBarn, at least for a while...
I used to buy my vaping stuff in smallest possible quantities, hoping and knowing that the technology will keep improving. I never stockpiled--ever. Until late last year. I'm happy I waited to the last minute to start getting multiples because I'm now stockpiling the latest and, IMHO, best. At least for me. Good 510 mods, Innokin Z and Sceptre line, etc. 