I got suckered into this by the cost savings. In all, I really have saved a good amount of money. However, reality sets in, and the savings isn't as great as I should have made it. I get interested in trying new things, and wind up buying it.
My latest big purchase was two Sigelei 150s, but one was only $20 using a customer appreciation card. Prior to that, I won a couple hundred from a scratcher, and ended up blowing some of it on a SMY 260.
If I quit buying new things, my costs per month would only be about $50 or so, since I mix most of my own juice...which is a huge amount less than what I was spending on smoking.
Luckily, I've been able to sell most of what I've bought and decided it wasn't what I needed or it didn't work as described, for about half of what I paid for it. I just wish I had taken note of everything I've spent, just to know.