On the subject of flipping: I don't like people who take advantage of other people who don't know how much their gear is worth or has appreciated. Or people who take advantage of people who are willing to sell gear for cheap to brethren hobbyists, i.e. "Oh please! I'm a college student. I really love those headphones and will keep them forever!"
Obviously these cases involve some level of dishonesty and greed.
As far as our Southerner friend "flipping" his HEK, I don't give a crap. OhG didn't like it, he's free to do whatever he wants to it. It's not his fault that he can get a lot of money for the headphones. Blame Moon Audio for "testing" the market at $2.5k with the bogus early for sale page. Blame HF'ers for willing to spend that much. Blame Jude.