Haven't thought of that. Had a coworker help out with my vape budget and now I am set for approximately 3 and a half years. Only needing to buy cotton and a couple coils for Emow tank which is about $3 per month. Gotta love unflavored and coil combination. They last just over a month. Cotton, going on 1 year for $2. I used to spend $60 a month on cigars so when and if I need something, I would buy it then but have all I need for now. 2- low powered MVP, XPro m80, 2-Mech mods, 100 Sig and 150 Sig TC, 6 sets of 18650's, charger, wire for years for my rebuildables, enough flavoring and Nic for about 3 1/2 yrs.