Two days ago I made 6k in about 30 minutes with the extra mats/glyphs I had. My old guild had 10 Mage Armor glyphs which are bugged out for Scribes atm so I was the only one that had them on auction
Most likely, just about all mats are going to sell better post-Cata, with people re-rolling Goblin or Worgen, and a lot of people trying to power-level