Blackrock Depths, how profitable is it?

I was trying to figure out what to write about for today so i looked at my reputation tab and noticed i can use thorium brotherhood badly, so i went and grabbed all the cheap fiery cores off the AH, just to make sure i had enough. So i started this BRD run just like any other, first i turned left opened the gate and did a full clear of Dark Iron Highway for Relic Coffer Keys. I then double backed and went right and took the first right door to go to the East Garrison and then into the ring of law. I then went around the edge (i usually don't do ring of law) over to the shrine of thaurissan to kill pyromancer loregrain for that rare drop of Enchant weapon fiery formula. I then head north to the domiciles area clearing as I go and make my way to the Black Vault to kill verek and his master so that i can open all 12 vaults to summon watchman doomgrip to recieve his loot which will be below the unopenable vault in the middle. I then go through the hall of crafting killing fineous darkvire before I continue to the Black Anvil to kill lord incendious. This is the point where I was lost for 5 or so minutes (I know noob move), I finally found my way back to the East Garrison and as i was entering it from the upper ring of law area i turned right and stealthed down that hallway to the West Garrison where I first killed General Angerforge before making my way to the manufactory. Here i killed Golem Lord Argelmach and then headed east to the Grim Guzzler. As you enter turn left and go into that small section, smash the 3 kegs to summon hurley blackbreath, then exit and turn left and talk to ribbly screwspig. Then kill him and his goons and head upstairs, I then talked to the quartermaster to rep up to exalted and bought all 3 weapon enchant recipes. Here is where I stock up on dark iron ale mugs for the Darkmoon Faire pet frog which sell for about 10g for 2, talk to the gnome named plugger spazzring to buy 10 of these mugs for dirt cheap and then loot the 5 mugs on the table. Then turn around and kill Plugger and his goons. This next part was a little confusing for me, I cleared the bar while waiting for guards that i thought came and unlocked the door, after vendoring stuff and being afk for about 10 minutes no guards had spawned so I looked and the door was open and ran through the phalanx. For the last part take the first door on the left as you exit the Grim Guzzler and kill the ambassador down there. I then hearthed, disenchanted all the blues and greens and ended up with 4 lesser eternal essence, 6 dream dust, 8 large brilliant shards, 2 Greater Nether essence, some rare recipes, a libram of tenacity, some uncommon gems from the black vault, and some stacks of runecloth along with about 6g in trash loot and vendoring some items. Overall this took me about 20-30 minutes and was a great experience for getting a reputation to exalted.