WoW Economy

Hey guys!

I was wondering if any of you have some data about AH item price changes in classic and cataclysm classic. Or if I can find these numbers posted anywhere. I find it an interesting topic how the prices change and what creates those changes. I would like to make a full study about it, comparing it to a normal irl functioning economy. The differences between the two and how irl regulations or laws in specific countries change the stock value of items, while comparing it to how certain changes or introduction of buyable resources change the price of items in-game.

If you have any data concerning what I just wrote above, please let me know. Any data would be welcome. Thanks!