Apparently they accidentally removed all cost on the Shaman Resto T6 set. I.e., you can supposedly just go down and get it for nothing right now. Not recommended though, since Bliz has posted to say that they will hunt down every 'illegal' gain of the item with zeal, including any gems that might be socketed in them. So, yeah, don't try it
Still funny!
Source: http://forums.worldofwarcraft.com/threa ... 3986&sid=1