Owner of worldofauctions.info here, very interesting to see those regions open now.

http://kr.worldofauctions.info/en/realm/kargath/horde

Although I haven't updated the site in a few months (busy with work, playing WoW) and the graphs are pretty broken, there's some AH data there. Interesting nonetheless.

I've been in the middle of re-writing lots of back-end PHP code in Python (performance reasons) in case anybody was wondering. =\

The button at the top right toggles the language.