I recently purchased my own PG/VG mixtures. A 50/50 mix as well as a 100% bottle of each. I also purchased nicotine mix as well (60mg). This way I can experiment on my own with nic levels and make it a little more cost effective. In the mornings I vape at 16mg at what I purchased ..and throughout the day, I vape at 6mg, as I feel its mostly fun and decreases my chance of too much nicotine intake. Not sure if this is the right way to do it, but I am not yet ....comfortable with mixing my own just yet and I wanna use up what I purchase. Also when I let people try at work, I am mostly vaping at 6mg for them to taste. No one at my job is vaping but me, so I am their role model at the moment..so I really want to "tough" it out. Not one single cig in one month..but I gotta watch my second hand smoke, while I am showing off because it has me "mind trippin" at the same time, and may be contributing to my "withdrawals"...imho