Always have plenty of backups. If you're like me, there is no where to buy locally and everything comes from the Internet. I was always a panic smoker. If I ran short of analogs, that's all I could think about until I could get more. I'm the same with my Ecig and juice. I started with three starter kits and lots of juice on hand. I sure haven't saved any money, but in two weeks, I've stocked up enough batteries, attomizers,juice and flavors to last for months, just in case.