I have pretty much given up on glyphs. Even selling around 8-10k a day worth it just becomes too time consuming when you move that kind of volume. Most of the research glyphs sell for 50g+ each. I was just doing a weekly crafting session but it would take around 2-3 hours just to make the glyphs, not including milling and inking. Some times you just have to pull the plug, for the amount of time you put into the business and with posting 3 times a day with 3 glyphs it leaves me with really no play time (Other than running a glyph business!).
Check darkmoon card/deck prices on your server! Tsunami decks are selling for 17k on mine still, its riduculous. With a 4g/life price on my server I figure a deck costs around 5k to make. They are still a really lucrative market and sell well. If you do even one couple hour card session a week you will have plenty of decks come DMF time. Even selling just cards on the AH will give you a good return if your servers economy isnt shit (prices on my server range from 200g for the crappier decks and up to 1800g for tsunami cards). With that kind of return the money puts glyphs on my back burner. Even fortune cards sell in stacks of 20/100 really well at 14G/per, and with all the other people barking in trade they do all the advertising for you.
Boxing Day: 115k