First off you definitely need to get rid of your snowfall ink before cataclysm.
Let's start off with a list of ways to sell the inks, these are always fun:
- Runescrolls of Fortitude
- Cards of the North (green at 462)
- Faces of Doom and Iron-Bound Tome
- Sell in raw form
Cards of the North should sell well and you can advertise that they will raise reputation with the darkmoon faire. Also, with the changes to stats in 4.0.1 many players would gladly take the greatness trinket over whatever they have now, unless of course they have some of the best trinkets in the game. If you saved up eternal lifes for the gem rush in 4.0.1 that never happened, well maybe you could afford to make some cards of the north one last time. If you want you could also save these cards to provide skill-ups at the start of cataclysm since they go green at 462.