Snout,
the BEST WAY to vape on a budget is to buy very good equipment in the first place, that will last you and serve you well, and safely.
Becuase you won;t have to replace it in 2 months.
If I were you I would establish a relationship with a good vendor and buy genuine joyetech ego twists and /or vision spinners, and their chargers, and get some genuine evods.
I've had my joyetech twists for a year now, and they still work perfectly.