I believe a liter is 1000 milliliters and 100 mg/milliliter nic liquid is 10% pure nicotine.
If a milliliter weighs roughly a milligram, then I think that liter of nic will contain more like 1,000 mg of pure nicotine. I like the way you think though, sofarsogood.
I've got good news, you're wrong. One ml of water weights exactly 1 gram. a milliliter of pure nicotine weights 1.01 grams, almost exactly the same. A milligram is 1/1,000th of a gram. 1,000 mg = 1 gram which = 1 ml for practical purposes so, a liter of 10% nic has 100 mg of nic x 1000 = 100,000 mg of nic. You can google the details, as I just did. The tobaccoc leaves in a cigarette have 15-20 mg of nic but most of it is consumed by combustion. The yeild is 1 mg per cigarette so a $50 1 liter bottle of 100 mg nic yeilds the same amount of nic as 100,000 cigarettes, 5,000 packs, 500 cartons. Vaporizing doesn't consume any nic because there is no combustion. All of it goes into the vaper.
Gold sells for about $1,000 an ounce. If liquid nicotine were priced the same as the nicotine yeild from cigarettes, at $60 a carton, 100% pure nicotine would be worth $7,500 an ounce.