I would argue the Disenchantables market has less to do with DE being a group option and more to do with dungeon running being so damn quick now. No travel times, no LFG waits (unless you are a DPS looking to do a specific dungeon), the market is being overfilled, and its not going to change any time soon. If you are really interested in making your money, dump any epic gems or crusader's orbs while you have the chance, because those are going to be the next thing to tank.

And if you're REALLY interested in the long term, the next set of badge gear is going to be ridiculously inflated since you can now farm in excess of 100+ badges in a matter of hours. I estimate 36 badges/hour, give or take for crap like Stratholme or Utgarde Keep.