I can easily vape 10mls a day and up to 15 to 20 on a nice lazy beer filled relaxing day. This is through a 1.0ohm kayfun. I make my own juice, build my own coils so cost isn't a factor anymore like with storebought juices or factory heads. I have hoarded a pile of attys, mechs, mods and box hitters so I don't have to buy anything for a long time. My only purchases now are nicotine, VG, PG along with flavorings and I have enough of those not to have to purchase those well into the fall of this year. My wife thinks I have a shineyitis problem, I call it a hobby that we both benefit from. 