Well, my personnal breakdown is, with 397 gear, and drums of forgotten kings, counting travel time from Dalaran (except for part 2 of a raid) and selling loot:
Legend:
Hard: basically means there are 1 or more difficult bosses, but personnally I now easely one-shot bosses that took me some time to down, so efficacity comes from habit
Engineer: says it all
56 gold/minute BWL: 25 minute, 1400 gold + you can farm elementium ingots if someone is buying and prices are high on your server
Razorgore
48 gold/minute SSC: 35 minutes, 1700 gold
Vasjh
40 gold/minute SW: 45 minutes, 1800 gold
Twins, M'uru
38 gold/minute BT 5 bosses: 35 minutes, 1350 gold
33 gold/minute
(38-47 gold/minute): Ulduar Rush Freya + razorscale + auriaya
(+ mimiron): 50
(60) minutes, 1650 gold
(1850 + 500-1000 in reagents)Auriaya
35 gold/minute VA: 22 minutes, 770 gold
Toravon
34 gold/minute Naxx (no maexxna, razu, KT): 55 minutes, 1900 gold
Gothik
32 gold/minute TK: 35 min, 1150 gold
Kael'thas
32 gold/minute BT 4 other boss: 35 minutes, 1150 gold
Reliquary Council Note you can reset council, regen, than continue with them at the previous health.
26/gold minute Hyjal: 60 minutes, 1600 gold (looted ground trashes after bosses but not when a wave was in progress, no infernals, wyrms, gargoyles)
Azgalor Kite him as much as possible (see naj'entus/gorefiend videos), FD when you are about to die, use lick your wounds immediately then you have 30 seconds to finish him.
21 gold/minute AQ 20 + 40 (no Cthun): 38 minutes, 820 gold
Twins
23 gold/minute MC: 20 minutes, 460 gold
20 gold/minute Ulduar Hodir/
Council/Ignis: 29 minutes, 570 gold
16 gold/minute Malygos: 12 minutes, 190 gold
16 gold/minute Ulduar
ThorimVezax
Yogg: 35 minutes, 580 gold
12 gold/minute ICC 2 bosses: 15 minutes, 210 gold
12 gold/minute ToC 2 bosses: 15 minutes, 210 gold
Beasts
11 gold/minute Onyxia: 12 minutes, 140 gold
Kara, gruul and maghteridon have been nerfed to worthless.
So, I once made 20K gold in 1 week with soloing
