Putting up other gear for auction
Checking the price of Large Prismatic Shards and Large Brilliant Shards is also not a bad idea. Once you get a good idea of the price, hit up the AH and buyout any 65+ blue that is below the buyout price of a LPS, and any 50-60 blue that is below the buyout price of Phoenix Dynasty Money. Unlike putting up other gear for auction, enchanting mats have no deposit, so you are not eating a loss if your mats do not sell.