Just thought I would mention this and see what other folks are doing.
I still (mostly) faithfully collect keys, and run the treasure scenario in bunches. In general I just try to mostly clean out the first room.
I just did 5 runs on one of my characters and came up with the following:
2104 gold including some vendor grays
12 Greater Sunreaver Onslaught Insignia
8 Sunreaver Onslaught Insignia
7 x DE greens, vendor price ~100g
2 x troll transmog greens, AH sale price 780g
13 Spirit of Harmony (2 x Spirit of Harmony + 110 Mote of Harmony)
8 Great Pandaren Banquet, AH sale price ~140g
11 Shanze Ritual Stone, vendor price 220g
Not bad for 45 minutes of "work" really. I would say this is pretty typical although the amount of Harmony may be a little high.