Again just playing Devils advocate here...
I don't think those sort of prices should become the norm. OK, quality coffee demands a good price, exceptional coffee maybe slightly higher. I think that if this sort of price ever became the norm as you suggest, then coffee will become very quickly eletist and out of the reach of most people. Then I guess we would look at the masses only having available cheap rubbish which will put the scene back to where it has came from?
Hopefully the knock effect would be to enthuse other producers to set their sights higher to acheieve a greater price and so on and so forth That way everyone wins, which I guess is the whole point of these auctions.
Please don't think I am arguing for the sake of it, just trying another point of view.
You may be right, where does the desirability come from? Because frankly I haven't a clue!!??!!