I've heard this question before and would love the group's opinion on this.
If a customer comes in and asks you "how much vaping is TOO much?" What is your answer?
The underlying question is (assuming they are a former smoker): how much nicotine am I ingesting compared to cigarettes?
As a shop owner, customers look to you to give them advice on this type of thing so I think it's relevant here.
The nicotine content of cigarettes ranges from 4mg-14mg, depending on the manufacturer and the brand. E-liquid is measured in mg/ml, so a 3 mg/15ml bottle has 45mg of nicotine - that's between 3 and 11 cigarettes per bottle.
So how much is too much? I guess it depends on why you vape and how addicted you are to cigarettes.
What are your thoughts?