Dehydration is at the top of the list.
Figuring out the best hardware setup in an efficient manner.
Finding the right flavors.
Discovering and solving the problem that vaping can be another yoke on my shoulders much like analogs.
Finding ways to economize without sacrificing quality- costs are now down to $1.50? per week- it's so insignificant I haven't even bothered with the numbers.
Researching- although I'm a research hound I found this part to be very time consuming and at last count prolly over 1000 hrs BUT it has paid off in spades for myself and many close friends.
My next door neighbor and I started about the same time in February. She is tentative about it and I tend to have larger orders which have been detrimental to my pocket as I came way down low on nicotine fairly quick, so I am inundated with juices I like but are higher than where I am in nicotine. It's my fault I thought it would take me much longer to quit smoking after 38 years off and on, so I am willing to eat the costs, but I see above your cost per week is a dollar and a half. I wish I could say the same although I have cut back significantly and I have all my receipts so I can figure out startup costs as wel as juice and carto expenditures. So, I expect it to go way down in the second six months. I haven't really noticed the dry mouth that much as I alway tend to take in a lot of fluids anyway. But getting back to your expenses, I tend to vape about 4ml a day. Is there a site that is cheaper to order from. Right now I use about three sites.
Thanks