It only takes me a few minutes...yes, I have to take it apart but that takes maybe 30 seconds. If I have juice in the tank, I take the top cap off and pour what's left back in the bottle.
Then I take the whole thing, along with the pv to the sink..
take the tank off,
take the chimney and chamber off (rinsing as I go)
then I slide the old wick out and give the coil a dry burn.
Then I take it off the pv and rinse it.
I've placed everything on a paper towel.. I gather it up and go back to my desk...
I tear off a strip of cotton.. roll it.. slide it through the coil.. trim the ends.. put the chamber on..
tuck the wick tails down into the chamber
(making sure they are on top of the juice inlets)
I drip maybe 8 drops down in the chamber to get the wick saturated..
screw the chimney on...
screw the tank on..
cover the air hole.. pour juice in the tank.. start threading the top cap on.. as soon as it catches I turn it upside down and wait for the air bubble to rise... take my finger off the air hole and finish screwing the cap on. Done.
I do this every night because the juice I use gunks my coils up pretty fast and I like the flavor of a fresh cleaned coil. If I used a carto tank, I'd probably have to change cartos in the tank every day and that would be more of a hassle to me, especially price wise!
Doing this may be a big deal to some but it's not to me, especially since coils last a long time and cotton is practically free. The vape quality is worth it plus I can just throw it down on the bed or anywhere and not worry having to keep it upright. This is why it's worth it to me. You may not have to change your wick every day... you might do it once a week or maybe two weeks depending on your juice. I can tell when my coil starts to get gunky. I have a peach mix that doesn't gunk up and I don't have to change the coil near as often but I don't vape it near as much either.
You said you may sell a provari... one of the major reasons I switched to the kayfuns was, with a genesis, the vape wasn't good to me unless the coil was .8Ω and I had to use it on a mech. I wanted to be able to use my provaris. They kayfun works great on a provari. I still use it on a mech sometimes but now I can enjoy the regulated voltage of my provaris again.
Just out of curiosity I just rewicked and timed myself. I did all the steps I listed above starting with pouring out any leftover juice and ended with screwing on the top cap after filling. It took my exactly 5 minutes and 4 seconds