The eRoll atomizers (Ego C style) are very easy to clean and reuse a number of times. There are a few posts about this, but just in case someone has not seen them, here is a video:
VaporChase Tutorial - How to Clean an eGo-C Atomizer - YouTube
I do not go through all of the steps. Here's what I do about once a week when my atomizer starts having a hard drag and the flavor falls off or disappears completely:
1. I drop it in a shot glass with isopropyl alcohol and let it sit overnight. (This is to loosen up the wick, which might be gunked up and stuck to the coils.
2. The next day I take the spike off the coil. It not glued in and it is very easy to wiggle off with a set of pliers. (I prefer pulling with pliers rather than prying with a small screw driver, because the latter method has a tendency to warp the coil cylinder and make the atomizer hard to get back into the battery snugly.)
3. Then I use a small screwdriver or toothpick to scrape the coil a bit and loosen up the burnt e-liquid caked onto it.
4. Then I drop the two pieces back into alcohol and let sit over night.
5. The next day, prior to putting the spike back onto the coil, I do a dry burn using my eRoll. I simply put the half-atomizer (just the coil piece) onto the eRoll battery and then cover it with the atomizer cone. Then I stand in front of a mirror and blow into the LED end of the eRoll. I do this about 4 to 6 times, each time for about 3 to 5 seconds. I continue until all of the caked on e-liquid is burnt off and I can start to see the coil glow bright red.
6. Then I put the atomizer back together and it is back into my rotation.
I've been doing this for the past two months and I have still only used 2 atomizers. Both are still in my rotation. (I did break one when I didn't do step one...the wick was stuck to the coil and it came out of the spike when I pulled the spike out. I saved the two pieces, though, and I will make a stainless steel wick.)
There are a lot of other possible steps one can take. But this takes me about 3 minutes each night and it seems to work very well.
For what it's worth.
[EDIT: I just noticed there is an entire thread below on "bringing back to life" the eRoll atomizers. My apologies.
http://www.e-cigarette-forum.com/forum/joyetech-eroll-mini/492860-bringing-atomizers-back-life.html]