Orr
In Orr you can purchase karma gear for 42k karma per piece. Each armor vendor sells armor’s with different stats and bonuses.
Locations:
• Armageddon – Straits of Devastation – Cathedral of Glorious Victory- Balthazar
• Arcon – Malchor’s Leap – Cathedral of Zephyrs- Dwayna
• Rubicon – Malchor’s Leap – Cathedral of Eternal Radiance – Lyssa
• Aurora – Cursed Shore – Cathedral of Verdance – Melandru
• Mortal – Cursed Shore – Cathedral of Silence – Grenth
• Whispering – Cursed Shore – Arah Entrance

Guide for the vendors also show stats/runes for every item. Also screens for those that wish to see looks. Armors.
http://dulfy.net/2012/09/08/gw2-templegod-karma-armor-sets/

New items added this patch. Backs, rings, Amulets and Accessory.
http://dulfy.net/2013/01/28/gw2-new-orr-temple-exotics/


Other karma gear vendors: These gears are not exotics but might be help full if you are looking for a special look.
http://dulfy.net/2012/08/28/guild-wars-2-karma-vendor-list/


Pirate weapons karma vendor

Cost 9800 karma per weapon. Vendor become available after you have completed the jumping puzzle Weyadant’s Revenge in Lions Arch.

Weyadent’s Revenge:
http://wiki.guildwars2.com/wiki/Weyandt%27s_Revenge


Looks:



Ebonhawk weapons:
• Tier 1 – 1hander 9800 karma, 2hander 9800 karma
• Tier 2 – 1hander 35000 karma, 2hander 35000 karma
• Tier 3 – 1hander 63000 karma, 2hander 63000 karma


Map:




Looks:



Lionguard Weapons:


• Tier 1 – 1hander 9800 karma, 2hander 9800 karma
• Tier 2 – 1hander 35000 karma, 2hander 35000 karma
• Tier 3 – 1hander 63000 karma, 2hander 63000 karma


Map:
http://gw2cartographers.com/#/show/325/

Looks:
http://wiki.guildwars2.com/wiki/Lionguard_weapons