I agree ... I bought a simple 1 button device and thought rebuilding coils would be hard ... then I read about the kayfun being was one of the easiest.
Simple and very easy indeed ... I watched 2 videos, then made my first coil in about 10mins at 1.8ohms.
This simple setup became my perfect vape setup ... now I vape for next to nothing.
I'd like to be in that camp, but I'm in the other... started Aug '13 - estimated I've spent over 2k on vaping - including everything from wicks, juice, mods, attys and everything in between. came out to about $6 a day or so... Got my Reo now.. time to back off and drop my daily vape spending rate..