It is kind of lol their mentality these days, they don't like the way addons with radars/addons reduce the difficulty of encounters so they break the addons, they don't like the way some players have used AH addons to get super rich so make items cost stupid amounts lol.
I mean seriously, the AH farmers who have seven figure (or more) gold won't notice this cost, they will probably make it back in a week whereas the average player will probably be unable to ever afford the new ring.