I see the logic. But after vapor taxes for states that have one, it can get expensive. Then you throw in the reporting of my purchase data to the feds (IIUC) and I'm out. But that's just me. Glad I'm stocked. Sorry to say, but as long as China is a viable option, that's where all my purchases will be from here on out.
Someone reported the other day that they bought a liter of nic and their state's 9 cent per ml vapor tax came to $90, which was a lot more than the nic itself (presumably they bought the $65 nic a MFS).
I understand something is better than nothing, though. So it's a good thing if you don't care about buyer privacy.