youtube.com/watch?v=xp5WK2DzBeM
This video says you can earn 115k per hour farming in certain spot, but thats really misleading description. You wont be getting 100k in an hour, you are getting loot worth of this if you ever get them sold at the current AH price.
If you spend months trying to sell items you farmed in 1 hour period, thats hardly "per hour".
Correct definition would be taking the whole time spent playing wow from 0g to moment you get 100k gold.