DoctorJ

After reading the regs closely, I'm not too worried at this point. We will have all of the vaping equipment at our disposal that is out now and what comes out before 8/8. I do want to be prepared, but not at this juncture to the point of having massive amounts of vaping equipment and supplies taking up a whole room! I'm with whoever said "let's wait and see". The regs are a "final deeming" yes, however, if you read closely the FDA states that there could be changes as they gain information and more knowledge on the subject.
IMO, there might be a bit less of the vaping supplies out there once the 2 year period is over, however, this might be a good thing as far as more reliable and safer equipment and supplies. We will probably be paying a bit more I'm sure as ciggarette smokers did once the government starting piling on the "sin taxes". I remember cigs being .45 a pack when I started smoking back in 1976 and now they are $4 a pack (for the brand I smoked and where I live, I know they are much more expensive in other areas). 
We may have to rely on B&M's much more than we do now. I recently spoke with a local shop owner and he said that equipment will more than likely be a bit more expensive, however, it wouldn't affect him as much since he doesn't make his own juice and is strictly a retailer. We may also see a big decline in online sales due to ID restrictions, but I'm sure the industry will address that issue and hopefully it won't make as big of an impact to the online vendors. 
At this point in time, I believe we are going to be OK for the next 2 years, I hope. But as I said, after reading the regs, I don't think the "vape apocalypse" is upon us, nor will it come to that point. But I've been known to be wrong, once or twice a decade... , and I hope this isn't one of the times.
Should it appear that we are in trouble, I'll be maxing out my credit cards and the post office will get to know me very well, even more so than they do now!