Usually way less than $10 a month as I only need juice, wire, wick material and very occasionally a battery. This month I have had to buy in a large amount of nicotine as the rules in the UK will change due to the TPD. I have also bought three more of my favourite atty, again because I don't know if I will be able to purchase them for much longer. Even with the extra purchase's I have spent about six weeks worth of tobacco money. I will have enough nic to vape for the next 15 years! It's a shame we can't trust the people we elect to do the right thing. It's really aggravates me that some European Bureaucrats that I have had no say in electing end up forcing me to stock pile like this.