Lawl my geekvape aegis was like 35USD and five coils are under 15USD. The coils last 2-3 weeks or more. The battery lasts FOREVER before needing a recharge.

I make my own juice so that’s free.

It was even cheaper using a SMPL mech mod and wrapping my own coils, but I got lazy. Now my 16+ 18650s go to my hobbyist flashlights.

I don’t know what your setup is, but you prolly overpaid