Oh to be the inscriptor that finds the first Life tap glyph, so much money to be made.
New glyphs are learned by
Book of Glyph Mastery. They are a Northrend world drop that anyone can loot and go for roughly 2,000 gold on my server last I checked. There are around 50 new glyphs to be learned in the patch thus the reason it's taking a while for some to come up. However, when they do the person making them will have a limited time where he'll be the only one on the server making a particular glyph meaning he can charge whatever he wants. I was happy to buy the Haunt glyph for 125 gold, I was expecting something in the area of 300 gold.