So, if you do it right, this is what you'd see.
1. Find suitable location for business.
2. Purchase equipment. (This is not cheap. A single manual filling pump alone runs into thousands of dollars.)
3. Purchase ingredients.
4. Ensure manufacturing facility meets clean room standards.
5. Send product off for testing.
6. Depending on test results, either go into production or reformulate the recipe.
So.... Taking into consideration the expense of just starting up a company (provided you're doing it right), how much is that bottle of juice now? People who complain about the price of e-liquid and claim they're doing DIY for a buck a bottle aren't looking at the big picture.
^THIS and #7 should be all other overhead; salaries & wages, insurance, etc...
To all who complain about high median pricing for "premium" juices, PLEASE...
START YOUR OWN EJUICE COMPANY (that is prepared for future operations with regulations) AND LET US KNOW WHAT YOUR COSTS ARE.
I shall await your results and listen to your NEW views about the pricing of 'premium' liquids.