AH average prices ?Follow

Use search for the item your looking for. e.g. Light Leather, then pick that from the list of found items and you'll get to the items page.

for Light Leather its: http://wow.allakhazam.com/item.html?witem=2318

There you have "recent prices:" and "[More...]" if you klick on more you'll find the prices for auctions on this specific item. Or just take the "Median Price", listet on the items main page.

But remember the prices on german servers are sometimes completly different. I sold about 90 light leathers for a price of 3s each and thats like 3-times the prices listed here, but we'll get to these prices in some months. On the other hand some of your prices are as deep as NPC-sell prices. e.g. Silk Cloth (Seide) sells on my Server for 1s50 which is actually the amount of money you'd get from an NPC.