Mercantile Report
 

Data is over the last 2 week period.

Top 10 Auctioneers with the most auctions and top 10 auctioneers with the most unique items auctioned.

http://i.imgur.com/03kG5oZ.png

Top 100 (or so) most frequently sold items.

http://i.imgur.com/FyglGrR.png

Top 100 (or so) most frequently WTB items.

http://i.imgur.com/5Ic4qqN.png

Some non-existent items are in the item lists due to how parsing works.

Neat.