Quoting this post cause it matches where I'm at most, though not exactly.
In first month of my vaping (back in 2012), I learned that devices need backups for your backups. I learned this the hard way, but the lesson I think was better learned for the long term than simply being told this.
I think with devices, it is reasonable to think it would be hard going forward to find something you for sure want/like and get it under a restrictive market. Though, I wouldn't say impossible. But compared to the other items it takes to make vaping happen, I think of this as item you (alone) have to bring to the table.
With eLiquid, it is clear one can DIY and/or stock up (on pre-made) to try to overcome potential restrictions. Because the FDA has a) taken a long time to get to actual deeming and b) announced a period for vendors that wish to stay in the game a grace period, I have not chosen to stock up yet. But not my only reasoning here, and more on that moment. I figure once the FDA stuff is actually announced, there will be 'going out of business' sales, left and right and would be a decent time to consider stocking up on eLiquid.
The other item, I just mentioned, is that I think an underground market will be about many things, some of which I think is not possible to predict. But one item I am currently banking on is that in that shadow market, vapers will want to help out fellow vapers, and thus distribute in the underground market. Hey, I could be sadly mistaken about this and all DIY'ers could be in fend for themselves mode. Plus there could be times when nothing appeals to me on open market, black market is completely dried up, and I've still not managed to go the DIY route. That could suck to be me, but I think it'll mostly suck to be a vaper at that time. Would tell me that things have changed so drastically that I can see me second guessing if I really wish to continue. I currently think it won't be like that for many years to come, but am willing to take the gamble, especially as I know DIY will likely always be an option. But to be clear, I think vaping survives if vapers stick together and look out for each other, and thus far I've seen no indications to suggest that won't occur. I think things could be very fascinating, in a good way, during the days of an underground market.
I think the people who are prepping for the worst and stocking up are doing a good thing and have reasons that I've probably considered, but don't exactly align with my outlook. I also think it will matter what the laws on vaping are, and a teeny tiny part of me is concerned with having too much of a heavily restricted substance around. I'd somewhat prefer to wait and see on that end, but I'm purposely writing things this way because I mostly feel it won't be a big deal and I am okay admitting to the idea that not stocking up is something that could backfire against me, if my end goal is to be a vaper for life.
mech mods, kicks, fuses, regulated mods, mod parts, a multitude of different drip tips, attys, rba, rda, rta, cartos, rebuildable cartos, clearos, tons of blister pack coil heads, rolls of wire, ss mesh, miles of silica, cotton pads galore, a liter+ of nic in the freezer, glass bottles of all sizes... I will probably buy some more nic but then I would need a bigger freezer and a few more RTAs and spare glass tubes to match the ones I already have.
But yet 
