Karazhan is one of the best places in the game to farm Knothide Leather. And since Knothide is going from 80-100g a stack on my server, this place can make you rich! Each run we are going to be doing takes 3 minutes and will give you 3-4 stacks of Knothide and 2 Stacks of Knothide Leather Scraps, plus 2-3 Greens and misc. items.
First go to Karazhan in Deadwind Pass. Enter but don’t kill anything yet. Take a sharp right just when you enter into the cellar filled with Spiders. Go through the first room here and you will see 3 rooms here filled with Bats and Hounds. The area is marked on the map below.
If you are level 90 you can pull all the rooms at once. The mobs will stun some so that can get quite annoying, and i usually pull about half the mobs at a time. Kill all the mobs and start skinning. When you’ve gotten them all, head back out and reset the instance. Repeat. 5 runs takes about 20 minutes and will give you 15 stacks of Knothide Leather.
In 1 run i got this :
60 Knothide Leather : 255g
35 Knothide Leather Scraps : 50g
3 Greens : 600g
Vendor Trash and Loot: 30g
Total : 935g in 3 Minutes.
5 Runs would yield 4500g + in 20 minutes.