It just depends on how you do it, once you find the stuff you like, it can be alot cheaper. Unless you always go chasing for the next big thing or are a real horder, you should save money. I used to spent around 200€ a month on cigarettes at least. I told myself, after my first month. I'll spend max 100€. I use an ego-c usb, 2x ego-c tiwst, ego-t usb, evic, with vivi novas, have an aga-t2, phoenix rba, an ufo and a vision eternity. There is alot of stuff that is looking good, can I buy it ; yes I can, do I need something more ... no not really.
I jsut depends on your habits and curiosity, if you always are trying out new flavors/juices, you will end up "break-even". But what is break-even ? Even if this would be more expensive, I prefer vaping. I a I have made up my mind. I feel better. So I don't care. I just stick to my pre target of this is the max. If you have this set goal, then this should not be too hard