Ratman will come back and answer more than likely, but I can say that I use the exact same wick (32gauge Kanthal wire with DCM cotton wick) on an ERA rebuildable on a REO and I can get at least a week out of one wick. They are so easy and so cheap that I sometimes end up changing it out before that. I keep trying to make myself leave it alone so I can actually see how long it would last, but can't seem to keep my hands off of it!! Ha.
EDIT: That wick setup is soooo cheap (probably costs less than a nickel) that I just keep "practicing" making coils.