I see what they say are the reasons for closing it down.. But here is what I am hearing between the lines:
"So guys, we are closing down the auction house! We are not really breaking even anymore between the cost of running the auction house (servers, maintenance, etc) and the profits we get from sold items so we are closing it down and hiding it behind a smokescreen of 'we are totally doing it for the player, lol'. Oh yeah, its still always online so lulz I guess. Please buy our expansion!"
"So guys, we are closing down the auction house! We are not really breaking even anymore between the cost of running the auction house (servers, maintenance, etc) and the profits we get from sold items so we are closing it down and hiding it behind a smokescreen of 'we are totally doing it for the player, lol'. Oh yeah, its still always online so lulz I guess. Please buy our expansion!"