I'm not positive, but I'll try and do the math..
I was a 2 PAD smoker, I'd buy one pack in the morning, and usually one later at night (or two in the morning if I was thinking ahead). In New Jersey, that's about 16$/day.
I've been
vaping for ~380 days (give or take a few "cheat" days), 380*16 = $6080.00
But then take into account the money I've spent on vape gear.. Probably around $860 or $1000 (I'm just assuming I've spent ~$500 on juice since I started, could be more.)
So realistically, I've saved about $5000. And probably my life.