Things you can do with wolf marks, other then buy the PvP gear to use:
- Buy the two music sheets (10,000 and 5,000 marks) and sell on market board
- Level one crafters desynthesis using the gear purchased with wolf marks (the i180 gear is a very nice way to level when you get to 170 desyn or above, which is easy to get to). You can then sell what you get. On my sever that is north of 700,000 Gil from capped marks.