PS, on the clones issue, the other day I met a guy at the local B&M with a Provari topped with a
"The Russian" (real thing). He was kind enough to disassembly it for me to see. I had with me a
Kayfun 3.1 ES clone from FastTech.. The apparent quality differences were
huge, mainly because of the finish, but the actual manufacture was not that different. Actually my cheap clone was as smooth threading as this guy's USD$120 vaping jewel and mine was 1/5 the price, not counting S&H which in the case of the FT was zero, null, cero... Oddly enough, most of the pieces were interchangeable between the two. Considering
The Russian is also a clone of the original (and even more expensive) Kayfun 3.1 from Svoemesto, I felt very pleased and smart.
Now, there are clones and there are clones. The one from FT I can fill from the bottom and won't leak. Not one drop. OTOH,
this one from e-liquid.cn is a sieve. It also doesn't include the middle SS tank section nor the double-ended keyring screwdriver. $25 vs $17. That is a no-brainer; I'll take the good one anytime even at twice the price, but five times as much? Hmmm. The vape is the same in all three. This is no Mercedes vs Ford comparo, not even real Ferragamo loafers vs Chinese knockoffs. For me, these are
utensils, not adornments or dress accessories.
Please be advised, I can distiguish and appraise quality items. Were it a car, a motorcycle or even a watch, I would concede. After all a true Rolex Submariner can be had for not a penny less than $7000, while a "replica" (a good one with an ETA caliber) that is virtually identical -on the outside at least- even side by side goes for about $600. I know, I have a real Sub (two actually) and a buddy of mine got himself a replica. Both are equally (in)exact. What would probably be the watershed would be taking them underwater, something I shall refuse to do with mine; that's what dive computers are for.

In any case, the Rolex is a jewel, the replica is just a posture; however, they keep the time as well as each other.