Check the Auction House and if 2 [Small Brilliant Shard] is cheaper than 5 [Dream Dust], then go to Winterspring and find Qia, then buy the recipe [Formula: Enchant Chest - Major Health], and make the enchant until you run out of Shards, or until you reach 300. The recipe requires Enchanting skill 275 to learn, so you will need some Dream Dust between 265-275 to make the Shield enchant.
The goblins of the Steamweedle cartel have set up several neutral auction houses about Azeroth. Gadgetzan, Booty Bay, and Everlook all house neutral auction houses. The neutral is useful for making money, as commodities that Alliance players can get easily can be sold at a cheap price to Horde players (or vice versa), and then sold at a higher price at a major city.
Guide to Obtaining and Selling the WoW Token Buying and selling the WoW Token, which allows players to buy game time with gold, or make extra gold by selling the token on the Auction House. What is Blizzard (Battle.net) Balance Overview of Blizzard (Battle.net) Balance, a currency used to buy Blizzard Entertainment products including World of Warcraft character services. How to Purchase World of Warcraft Game Time The cost of a WoW game time subscription, how to acquire a subscription, gift one, and cancel it, as well as how to play WoW for free.