Tempest Temple: Storm of Sorts: 15 PoE for a level 99; 19 PoE for level 105 Caverns of Endless Song: Seductive Subterfuge: 41 PoE for level 100 and 105 Degmar, The Lost Castle: Castle Relic: 180 PoE for level 104, 105 Thuliasaur Island: A Fateful Arrival: 232 PoE for level 104, 105 Combine Dredge: Kedge Counterblow: 387 PoE for level 104, 105 Note that the pages for the later HA's give the range of PoE given (earlier ones don't). Keeping this list up-to-date for ease of reference.
It varies, but the Degmar and higher zone missions give a lot more. They need to add how many you get once you complete one otherwise just look under inventory -> alt currency before and after to tell.
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Exor's holy blade cleanses his target (1274629)! Level 105 Paladin <Iratus Lepus> 16477 AA