You know, DE can make you alot of money if you have a profession which makes blues and greens.
For example, a few weeks back I started a rogue. I started her with LW and Skinning, since this gives you easy greens to begin with, not to mention that selling 4-5 stacks of Light Leather will get you fairly set on monies if you do it 3-4 times per level. Anywho, I got LW up to 225 skinning (with help from a guildie who also skins, this went by uber-fast) and farming items to make high-yield items such as Deviate Scale Belts and Toughened Leather Gloves, etc (If an item has good stats/is blue at a Lv. near the breaking point for PvP (i.e. close to 19,29,39,49) it will sell well to twinks (and not-so-great items sell well to not-so-rich twinks). After reaching 225 in LW, I switched over from Skinning to Enchanting, and then just invested in LW mats. First I made some cheap things with LW so I could get Strange Dusts and shards and all that (I believe chest pieces have a higher probability of dropping shards, but I'm not 100% sure). Then, once my Ench got to 225, I lv. to 35, and then would just make X10 of whatever was orange to me in LW, and then disenchanting all. As I went from 225 to 275 LW, I got enough items to get roughly 14-15 stacks of Dreamdust, about 25-30 Greater Nether, and managed, with those mats, to get my enchanting pretty high up as well. That was my case anyway. If you just want to make money, you can just keep your enchanting solely for d/eing, but I think there's much more profit to be had from making items and d/eing them than buying cheap greens off AH.
Enchanting isn't as much expensive as it is more geared towards a higher level character, since the mats you get depend on the lv. of the gear you d/e (I believe Dream Dust doesn't start dropping until Lv. 40 items, for example). Having a guild helps immensely, since you can go on low-level instance runs (VC and Stockades are prime for this) and get an assload of low greens to get you started on enchanting.
Anywho, I got a bit off topic, but I think this is taking the slow way, and all you get is money out of it, whereas with this method you get not only money, but 300 Enchanting eventually, which leads to making a crapload of money on enchants :D