Hey all. What would be considered to be the most cost-effective way to vape from your experience? I don't make a lot of money as I work part time at McDonald's, and the one I work at likes to screw people over with low hours. As it stands, I am out of money with only about 13 cartridges to hold me over till Feb. 5th (pay day). Would it be cheaper for me to refill my cartridges or to just buy them in bulk? Any ideas would help. Thanks.