If you have only taken up inscription since Cataclysm, you may be missing two glyph 'techniques' : Mana Sheild and Lash of Pain.
They are purchased as a BOE 'technique' from Larana Drome in Dalaran. They are not quite what I would call 'must have' glyphs from a sales perspective, but they are at least profitable.
These glyphs are sold in "limited quantities", if you call 4+ technique's on a 15 minute respawn timer limited.
If you are a scribe, you should probably get these. Even if you are not a scribe, and are passing through Dalaran, it would be worth stopping in at the scribe's satchel - facing away from the magus commerce exchange in dalaran, to purchase a few techniques to put on the AH.
Weekend minipost: but, but, but Mittens pinged it's over - When Tora Bushido, leader of Marmite collective lost his mind, The Mittani himself pinged to the CFC that the wars that caused them 2T damage are over. So ...
50 minutes ago