I actually don't pull the vapor into my lungs. I just kinda suck it into my mouth, hold it there for a few seconds and then release
through mouth and nose. I figured I had done enough damage to my lungs during my 45+ years of smoking so am trying to give them a very long rest. I suspect the nic is absorbed by both mouth and nose about as well as the lungs absorb it.
My Freedom Smokes ? That was a good price for that time. I too bought some of mine when they ran sales. I am thinking I got some of it for as low as $35.00 for a liter of 100mg back in 2012/13