At the start with the cig-a-like things I was at about 4ml's a day. As the gear improved the juice consumption went through the roof. At one point with the ego-c I was at 10ml's a day. When I got a RTA it went to 12ml's a day! I can vape all day because of my job, no-one but me and the captain on the boat. The protanks were so much better I was able to use abut 6-8 ml's a day. All that was at 24mg/ml!! After three years I decided to lower the nic, still I was at 6-8ml's a day. Now with the Kangertech sub tank and a 1.2Ω atty I am only using 4-6ml's a day of 12mg/ml. The better gear has surely helped. I do make my own juice so cost is not much of a factor. It costs me about $40 for a months supply as I have recently added Whole Tobacco Alkaloids (WTA) to my base mix. The WTA's help me be calmer and the need to vape constantly is finally getting under control. The WTA's have made it easier. I now, do not need to chew nic gum if I can't vape. I have about a 5 years supply of nicotine in the freezer, if I go to 6mg/ml it will last about 8+ years. To those wanting to make you own juice, learn and do it now, and stock up, 'cause Uncle Sam is going to make it hard to get juice starting next year.