It looks like 30 mL of 150 mg/mL for $40.00.
The seller very correctly communicates that this concentration (150 mg/mL) is not to be trifled with, and even insists on getting the buyer's phone number to contact the buyer to make doubly sure the buyer understands that this stuff can be dangerous undiluted.
In my opinion (I'm only a chemist), 100 mg/mL is about the highest nicotine level I would like to see available. I guess I won't criticize 150 mg/mL too badly, except to say, that's getting a bit over my "comfort level". I simply worry about escalation by vendors in order to stand out. Who is going to be first to offer 250 mg/mL? Then 500 mg/mL? It's a slippery-slope that might take us from 100 - 150 mg/mL offerings to these simply irresponsible 25 - 50% or higher levels being offered for sale.
I occasionally post calculations of the "cost effectiveness" of nicotine concentrates. This represents a far from complete "guide" and mostly reflects vendors with whom I have ample customer service experience.
In the case of DWF Vapor, you are getting 4.5 grams of nicotine for $40.00. You are paying $8.89/gram of nicotine.
Two of my personal favorite nicotine suppliers are Chris at myfreedomsmokes.com and Levy at xtremevaping.com. Both offer nicotine at up to 100 mg/mL.
Chris (myfreedomsmokes.com) will sell you 60 ml of 100 mg/mL for $73.95.
On a per gram basis, you are paying $12.32/gram.
Levy (xtremevaping.com) will sell you 60 mL of 100 mg/mL for $36.50.
On a per gram basis, you are paying $6.08/gram.
For another comparison, the highly pure and extensively tested Platinum Ice liquid from Totally Wicked goes at $44.99 for 30 mL of 54 mg/mL. On a per gram basis, you are paying $27.77/gram. (I include this liquid only because I consider it to be the single finest liquid purity and testing-wise that I have personally encountered).
So...
Cost per gram of nicotine present
xtremevaping @ $6.08/gram
DFWVapor @ $8.89/gram
myfreedomsmokes @ $12.32/gram
TW Platinum Ice @ $27.77/gram
xtremevaping is clearly the low-price leader here.
Another way to look at this is what would be the cost of making 15 mL (perhaps a 1 week supply) at a common inbetween concentration of 24 mg/mL?
Cost to produce 15 mL of 24 mg/mL e-liquid (Approx. 1 week supply). (nicotine cost only)
xtremevaping @ $2.19
DFWVapor @ $3.20
myfreedomsmokes @ $4.44
TW Platinum Ice @ $10.00
Assuming 15 mL will last one week, here's the breakdown versus smoking a pack/day of analogs at $5.00/pack ($35.00/week)
Cost versus analogs ($5/pack) at one pack/day
xtremevaping @ 6%
DFWVapor @ 9%
myfreedomsmokes @ 12%
TW Platinum Ice @ 28%
In all cases here (once you've written off the investment in batteries, attys, etc), vaping is clearly less expensive (not to mention being far less unhealthy for you) than smoking.
When comparing cost, I will note that I consider TW to be a long-established large-scale vendor. While their customer service and responsiveness is adequate, their size might preclude them from providing personal service to the degree that I've seen from some.
I consider myfreedomsmokes to be a long-established vendor with a solid reputation for extremely responsive and personal service.
I consider xtremevaping to be a more newly-established vendor that is quickly building a reputation for extremely responsive and personal service.
DFW Vapor looks very new, and time will tell as to their level of customer service satisfaction.
