I have 3 liters of nic in my upright freezer space, wedged in to the door shelf which was rarely used. This will be my stockpile for now, a 10 year supply, more if I reduce daily nic consumption. If the vape war turns ugly and there is a grace period I'll proably double up but then I'll either need more freezer capacity or a bottle of 250 mg concentrate. On Amazon there are 1 cubic foot models called medical freezers that cost about $200 and claim to use only $30 in power per year. Some of them have locking doors which is a nice touch. (A built in temp guage would be worth paying some extra for.) I'd rather avoid the chore of monitoring and defrosting an additional freezer that I wouldn't need to access more than once a year or less.
It's still hard to believe that governments have the stomach for a new drug war. If the nic in a $50 bottle of concentrate were priced the same as the nic in Michigan cigarettes it would be worth $30,000. In Chicago it would be worth $60,000. May be it's time to agree that the days of easy money from tobacco taxes are over.
PS Here is another way to look at the money part. An ounce of gold costs $1,000. The nicotine yeild from cigarette smoke, what you actually inhale, costs $7,500 an ounce. An ounce of nicotine in a 1 liter bottle at 100mg per ml is costing you $14 an ounce if you paid $50 for the bottle. So my freezer deserves a name, Fort Knox.