I've been getting 3mg unflavored base (30/70) from LNW for years now. I order like 1 bottle like every 3 months or something like that. Apparently they're not shipping to retail customers anymore.
I came here hoping to get some recommendations for another source. I don't vape flavors so I'm not to concerned about a place with a lot of flavors or anything like that. Thanks!
At this point not many vendors are shipping nic anymore. You can try Carolinaxtract, nicotinegiant, or myfreedomsmokes. Those are the only 3 left I can think of. If 3mg flavorless base isn't available you may have to buy 100mg/ml nic, vg, and pg and make your own 3mg. It's super easy with a proper .01g scale.
Edit. With nicotine being hard to source I personally would stock up on a bunch of 100mg/ml and store it in your freezer divided up into amber glass bottles with polycone caps. Vg and pg will always be available.