Ask yourself how long do you plan on doing this? Overall, I am a returning Vaper that is quitting smoking. I am aproaching this as a hobby. With that mindset I bought higher end equipment, and I will need to maintain it. However, once the initial cost is gotten over ($200-$400 to start up higher end) it is extremely cheap to vape. My consumables will cost well under $40 a month, and I have a new hobby. So again how long do you plan to Vape? If you plan long term, pay attention to the fact that most people that go the cheap way end up spending much more than a Provari,or real DNA30 device costs. Replaceable cartridges will cost significantly more than rebuidable atomizer clones.
Overall, spend some time thinking on what you want; as you already have a large supple that you probably won't touch once you get into real vaping.