Well I lately have been making a killing making Glyph's of Eviscerate.
Basically they require 1 Lion's Ink and 1 common Parchment.
Lion's Ink comes from Golden Pigments x 2.
Golden Pigments are milled out of Wild Steelbloom, Kingsblood, Grave Moss and Liferoot. Generally one of these herbs tend to be very cheap for a stack, going 5g or less....
Here's the trick, for 20 Kingsblood (5g) I get on average 11 pigments, which yield me 5 Lion's ink. Combined with 5 cheap ass parchments that's 5x Glyph of Eviscerate, which on my server sell for 40-50 a pop.