Well my banner is simple, just need to know how many cigarettes you had per day and how much for a pack. You don't need to convert carts and analogs! But if my sig says I saved 100$, it just mean I saved 100$ for not buying analogs, there's no reference about how much my ecigs cost me up to now.
In reality you see, my sig says I saved 90$ for not buying analogs, but I spent 516$ on ecigs,
eliquids, etc.