@52anddone - Wizard Labs, here in central Florida,
DOES still sell and ship 100mg/mL nicotine base, in your choice of a 100% PG or 100% VG base. I've linked to it below. It ships as (2) 500mL bottles of it. They also sell it by the single 500mL bottle, too. They no longer ship it by air, but do still ship by ground.
100mg Nicotine Solution - 1000ml
You need to email or call them for pricing. From my experience, they
do answer the phone promptly and are very helpful and courteous by phone.
Based on my personal experience with their nic base...it's wonderful. I would've filled my freezer with it if I hadn't discovered Heartland Vapes nic at a much lower price and comparable quality, and started buying it for my "stash" in early 2018 IIRC.
I bought a Liter of WL 100mg/mL in Jan. 2016, after I'd bought a 120mL bottle of it 2 months earlier and really liked it. I also bought (2) 500mL bottles of their 60mg/mL 1 year later when it was on Sale at an amazing price. I kept those 2 bottles unopened, and
never froze nor refrigerated them, and you know what???? Even 3 years later...it was almost totally clear, was odorless, had no bad taste at all, etc. I was amazed when I opened the first 500mL bottle of it about 1 1/2 years ago. I'm using the last 100mL or so of the 2nd bottle even now! I definitely wouldn't hesitate to
buy their 100mg/mL...if I needed more.