It doesn't have to be expensive at all. I used my ego starter kit exclusively for probably 2 months until I added another tank at $10. Then a spinner battery.The most I had at once was 3 batteries and maybe 5 tanks. So that's less than $100 over 5 months not counting juice. My local b&m is pretty cheap - $15 for 30ml. Probably all told for the first 5 months, I was in less than $200. Cigarettes here are $50+/carton X 2/month x 5 months = $500. I've since bought a urock battery and hbc tank for a total of $68. So I'm still ahead and I don't see me getting further into equipment. And no cigarettes = no smell, absolutely NO sinus infections (I had horrible sinus issues), no standing outside when it 11 degrees, etc. Well worth the investment.