Cheap ... coils! I have an ohm meter (nothing fancy, but I can tell if the coil has a "short") Tested the bad coil... dead short. Tested the others and sure enough on more bad coil. Took them back to the shop and they gave me a couple new ones. Tested those and one more bad coil. That's 3 out of 7. Anyway, moving on... ordering coils for my PockeX. Aspire has them 5 for $15, but vaping.com has them a bit cheaper. Are they official Aspire coils? Don't want to get ripped off again. I know that I messed up getting a cheapo vape pen (still not happy with the EVOD, even with new coils) so lesson learned. All my friends that are regular vapers have devices costing over $100. I have basically wasted $60 so far. I will save up for a decent device.
Yes everything at vaping.com is authentic.. I've never had any problem with them.
As you pointed out though, sometimes quality control sucks in China and like the majority of electronic cigarette manufacturers, Aspire is also a China based company.
Generally speaking, 3 out of 7 coil being faulty is bad, but getting 1 or 2 bad ones out of every 2 or so, (5) packs is about the normal.. maybe not every 5-pack you buy will have a dud, but then you'll come across that pack, and it will have a bad one in there.
Most places (not even vaping.com I don't think) will replace them because coils are not warrantied through the manufacturer, so the occasional dud is just part of the cost of vaping.
Generally coils are inexpensive enough that coming across the occasional dud isn't that big of a deal.. you just throw it away and factor it in as cost. Still beats smoking..
But I do think you ran across something that exceeded the normal with the Evod coils - just for perspective.
Many people buy rebuildable tanks (like the Gear etc.) and make our own coils for a more flavorful and less expensive experience, but not everyone wants to go there. It's some measure of investment to start, but then coils are practically free for life if it's of interest.