I've dabbled in it but don't do it anymore.
The demand for them is usually rather low most of the time. When people are twiddling their thumbs they look to level alts. Those who do BG leveling (or some of the others too) chant their gear with these chants.
It's a rather long cycle, but if you buy mats when their price is low, and sell the chants when the demand is higher, you should do okay... Assuming there isn't a lot of competition doing this too.
When there is no competition, you're usually laughing as mats prices are often low and you can sell them for whatever you want. Assuming people buy that is....
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