The chants may not sell well, but the mats do. The way to get cheap mats is to buy up low-priced greens and disenchant them. Know the price of the enchanting mats and buy up the greens that are cheaper than the cost of the green. This is what the /percentless command does with Auctioneer/Enchantrix.
Quick semi-hypothetical example:
You want Strange Dust to skill up your enchanting. On the AH, Strange Dust is going for 10s per. That could get pricey. So, you go look at some low level green items (armor and weapons). Scanning through, you notice 5 Soft-soled Linen Boots listed for a buyout of 15s each. Looks like someone crafted a batch and are looking to unload them. You have disenchanted these before and got 3 Strange Dust from them. So, for 75s, you can buy these 5 boots and disenchant them into 15 Strange Dust, which together are worth 150s. So, instead of buying 15 Stranged Dust for 1.5g, you've bought the same amount for half the price. In addition to using the Strange Dust to level your enchanting, you could now turn around and sell some of the Strange Dust to cover your costs, or to turn a profit.
This is just an example, but I'm sure there are plenty of people that can attest to the fact that working the AH for enchanting mats is profitable at the same time you skill up your enchanting. There are always, I repeat always, people undercutting and/or looking to unload low level greens. When I started my bank alt character with enchanting, I was buying up 30-40 greens per day and turning around and selling the dusts, essences, and shards. Low prices are so common, I would typically do a /percentless 60 or even 70 search because there were enough items at that profit margin to keep me plenty busy. I was making something like 5-10 gold profit every day. For a low level character, this is a decent income. Playing the AH this way is a sure-fire way to make money, as well as getting the mats to skill up enchanting. The profit margin will decrease as you move up to higher level dusts, essences, etc., but the concept stays the same and the profitability remains.
Sorry, post got a little long, but there have been several threads along the same lines lately. So, I figure there is a lot of interest.