This is up and running, here is the information:
Quests:
Exchange 10 WSG Marks for 50 Arena Points
Exchange 10 AB Marks for 50 Arena Points
Exchange 10 EOTS Marks for 50 Arena Points
Exchange 10 WG Marks for 50 Arena Points
Exchange 10 AV Marks for 50 Arena Points
Exchange 50 Stone Keeper's Shards for 50 Arena Points
Exchange 50 Stone Keeper's Shards for 5 Emblem of Heroism
Exchange 10 WSG Marks for 5 Emblem of Heroism
Exchange 10 AB Marks for 5 Emblem of Heroism
Exchange 10 EOTS Marks for 5 Emblem of Heroism
Exchange 10 WG Marks for 5 Emblem of Heroism
Exchange 10 AV Marks for 5 Emblem of Heroism
This vendor is located in the central area of Dalaran.
Thanks!