I'd ask this on the Blizzard forums but as we know it's mostly full of knob heads defending Blizzard till the ends of the earth.
So, I ask you. Regarding the instant level 90 sale, how feels you? Not the preorder but the fact they now sell it in the games "shop" for £40.
It seems to me, you are paying extra, not the play the game. The game economy below that level will probably become moot as well.