Quote Originally Posted by 'jimbobobb',index.php?page=Thread&postID=161300#po st161300
If you're going strictly for cash, might I recommend:

Onyxia for 150g plus a bunch of shards, sellables
World dragons for the same

And my personal favorite:
Doomwalker in Hellfire for 250g plus two tradeable level 70 epics on par with tier 4 that sell for a few hundred gold on the AH

As for Gruul and Mag, like the above poster stated, too many things going on - how are you gonna click the cubes? And the cave-ins on Gruul would kinda suck
I think that you could do Mag if you just ate the blast wave. At 80 I don't know if it'd be deadly. I don't think so.