By their very nature, most achievements either directly or indirectly cost you gold or are at least associated with some extremely unpleasant trips to the Auction House. We had a small discussion on just this point last week. But there are always exceptions, and there's a set of achievements in the game that will earn you a healthy nest egg if you care to go looking for them.
From my perspective, stuff like Got My Mind On My Money doesn't count, as it's just a reflection of how much gold you're looting in the game and not in itself a means of earning income. I'm after the stuff from which you almost can't help but make gold.
Concerning general achievements: Perhaps not surprisingly (given the overrepresentation of general achievements in last week's The OverAchiever: Got 100,000+ gold handy?), you're going to have a tough time finding a way to make money here. Most general achievements either cost you something (e.g., Into the Wild Blue Yonder) or are otherwise divorced from the game's financial side (e.g., Friend or Fowl?). I actually can't find a single achievement here that doesn't meet one of those two conditions. Look elsewhere, folks. You will not be making money from the general achievements slot.
Filed under: The Overachiever