You have to have 150 enchanting at least to start making money alright.
When you go to the Auction House Search for weapons 43-47 buy the ones that r 4g or so depending on how much Greater Nether Essence sells for one your server alright Then get it from your mail box and D/E it and most of the time you get a 1 or 2 greater nether essence and on my server they sell for about 7-12g each and its a great way for lvls 30-40 to make money. I hope its useful for you guys