Clean and dirty ones are practically the same. This is to prevent people thinking one is worth more than the other when really they're the same with the exact same purpose..

2.66 sales

http://www.tf2outpost.com/trade/17481688 <-- dirty

http://www.tf2outpost.com/trade/17430950

http://www.tf2outpost.com/trade/17459765

http://www.tf2outpost.com/trade/17489781

http://www.tf2outpost.com/trade/17448827

http://www.tf2outpost.com/trade/17489604

http://www.tf2outpost.com/trade/17488915

http://www.tf2outpost.com/trade/17452344

http://www.tf2outpost.com/trade/17488024

http://www.tf2outpost.com/trade/17474195

http://www.tf2outpost.com/trade/17472316

http://www.tf2outpost.com/trade/17469845

http://www.tf2outpost.com/trade/17468629

http://www.tf2outpost.com/trade/17450752

2.77

http://www.tf2outpost.com/trade/17441127 - 2 offers of 2.77 <--dirty

2.88 sales

http://www.tf2outpost.com/trade/17474235

http://www.tf2outpost.com/trade/17457850

3 ref sales

http://backpack.tf/classifieds/search/id/52d93df04dd7b8c3688b456a --> http://puu.sh/6wv6b.png

http://www.tf2outpost.com/trade/17451423

http://www.tf2outpost.com/trade/17449657

http://www.tf2outpost.com/trade/17455735

http://www.tf2outpost.com/trade/17471561

http://www.tf2outpost.com/trade/17470693

http://www.tf2outpost.com/trade/17089237 - offer of 3 ref

http://www.tf2outpost.com/trade/17472669

http://www.tf2outpost.com/trade/17477492

http://www.tf2outpost.com/trade/17463297

http://www.tf2outpost.com/trade/17465842

http://www.tf2outpost.com/trade/17475547

http://www.tf2outpost.com/trade/17349228

http://www.tf2outpost.com/trade/16249471 - 3 adds the past week

http://www.tf2outpost.com/trade/16776355 - none in stock for 3 ref <--dirty

2.66 buyers

http://www.tf2outpost.com/trade/13275551

http://www.tf2outpost.com/trade/14242675

http://www.tf2outpost.com/trade/17490390

http://www.tf2outpost.com/trade/6760241

http://www.tf2outpost.com/trade/17442783

http://www.tf2outpost.com/trade/17404662

http://www.tf2outpost.com/trade/17458150

http://www.tf2outpost.com/trade/17396947

Feel free to counter / support my proof. Vote based on proof presented, not blindly!