I haven't saved a cent. As a matter of fact, I've spent about $300 in the last 40 days or so on vaping, and I haven't quit smoking yet. I was spending around $30 per month on cigarettes that I make myself.
But, it's totally worth it to me. I'm down to less than half of my former smoking habit, while I search for the hardware, liquid type, and flavors that will ease (and hopefully assure) my successful quitting of analogs.
I've never been anywhere close to as confident as I am now that I can do this, and I'm happy to pay money for that!
I figure that once I get settled in, I can probably keep below $45 per month, easily. That's not bad at all.