I started vaping about 2 months ago. If you buy online, you can save a lot of money in the start up costs. A Kangertech Subtank Mini costs about $50-$60 in the store and can be had for $35 online. I use a eleaf iStick 30W box mod. Again, $80 in the store, $35ish online. Ever since I started, the headaches are gone, indigestion is gone, sleep is normal, etc.