I'm one of those people who rolled my own -- had a tube-stuffer machine, I'd buy "cartons" of empty cigarette filter tubes and then fill them with my own tobacco. All in all, a pound of tobacco + 3 "cartons" of filter tubes ran me around $20-25, so long as I did mail order. If I got tobacco locally... well, more than double that. Last time I bought a pound of loose tobacco locally I winced, and started ordering bulk from elsewhere.
This is why I still have about two pounds of (now stale) tobacco sitting around my house.
But a 20-count pack of cigs in southern California's somewhere around 5-6 bucks, my packs cost me about 2 bucks. Now, if I could just stop buying juice and go DIY, I might be able to "save money" again... but at the moment, vaping costs me more than smoking did.
Tastes better, too. I can deal.