Ok so heres how you can be on top of the IF AH.
Directions: (Pictures will be added further down).
1. Go to ironforge.
2. Make sure u dont have a hearthstone, or its on cooldown.
3. Look at pic number 1. go there and use auto-unstuck.
4. Once your in the box, press / to walk, walk to the upper - right hand corner, get on the very edge, and jump until your up.
Pictures...
There u go, Sorry if its a re-post, i looked and i didnt really see anything to do it like this way. or at all.