Guild Wars 2

Where can I purchase exotic (Level 80) Cleric trinkets (back item, amulet, accessories, and rings) in Guild Wars 2?

If I recall correctly, the only Karma Trinkets are the ones in Orr. Cavalier (Balthy), Magi (Lyssa), Rabid (Dwayna), Wayfarer (Melandru), and Soldier (Grenth).

You can craft most Trinkets with Cleric’s Stats and the closest option for back piece is Magi’s (but you can gem in an Exquisite Sapphire Jewel to it). However the craft/TP Cleric Trinkets wont be costing just Karma.

1) Craft it yourself
2) Buy from other players on the Trading Post

Exotic cleric back item does not exist. The best you can get is Masterwork(from personal story). If you are mostly interested in the Healing Power there is exotic Magi back piece which you can get for 42k karma or 5g+5 guild commendations

The other option is http://wiki.guildwars2.com/wiki/Sclerite_Karka_Shell_%28ascended%29 but that is Condition Damage instead of power and expensive to make AND 1 per account