Whups, mispost.
Anyway, currently glyphs are still selling slowly but steadily. Haven't noticed any diminished demand - I regularly use addons to make and put up all glyphs that are worth it, and usually have around 500 glyphs up at a time.
EDIT:
Table formatted from post above
| Type | Epic | Rare | Uncommon |
|---|
| Green | 24 | 25 | 141 |
| Blue | 19 | 19 | 155 |
| Purple | 26 | 21 | 148 |
| Red | 18 | 27 | 119 |
| Orange | 21 | 23 | 164 |
| Yellow | 22 | 33 | 119 |