It's hard to really draw a line for "equals 1 pack of cigarettes".
I mostly drip. So when I go out for a "smoke break", 2 drops lasts me about 10 drags, which is about what I would have gotten out of 1 cig. Takes me a couple minutes, given how often I drag, so that's also about 1 cig. When I was filling carts, I would get about 20 drops into 1, so by that math, it's maybe a 1/2 pack? If you spin and whatnot, I think you can get almost double that (but when I tried, I flooded pretty badly, so maybe more like 30 drops total).
When he says "about 2 hours" you need to think of that as almost constant use. PV in your hand, puffing the whole time. Based on that, how many cigs would you go through? Again, probably around 10.
I mostly drip. So when I go out for a "smoke break", 2 drops lasts me about 10 drags, which is about what I would have gotten out of 1 cig. Takes me a couple minutes, given how often I drag, so that's also about 1 cig. When I was filling carts, I would get about 20 drops into 1, so by that math, it's maybe a 1/2 pack? If you spin and whatnot, I think you can get almost double that (but when I tried, I flooded pretty badly, so maybe more like 30 drops total).
When he says "about 2 hours" you need to think of that as almost constant use. PV in your hand, puffing the whole time. Based on that, how many cigs would you go through? Again, probably around 10.
...tons of cheap 'fill' soaked with mediocre juice, and the el-cheapo made plastic 'cartridges' were meant to be thrown away... it's the reason they are cheaper than the 'fillable ones'...is it worth it to take them apart to rebuild or refill? I don't think so unless you don't have a choice, for now.... for 99.99% of all cases, you get what you pay for... it's great that there are forums to ask others that have been there and still vaping... more experience and opinions to learn from. I would rather be buying my parts and liquid, and do it myself, thanks to more information I've gone through in the past few months... now that I know more, I've been DIY with atty's, carto's, juice, other accy's and kits made by reputable manufacturer/suppliers... 
