clean = dirty

I have not bought one for 3 ref for 2 weeks from my quickbuying trade.

This is not that commonly traded as you think.

3 ref sales

http://www.tf2outpost.com/trade/17917290

http://www.tf2outpost.com/trade/17915386 --> http://puu.sh/6STFw.png

http://www.tf2outpost.com/trade/17909646

3.11 sales

http://www.tf2outpost.com/trade/17912435 - only 9 in his bp

http://www.tf2outpost.com/trade/17642472 - no bp expander in stock, bot

http://www.tf2outpost.com/trade/16656107 - offered 6.33 for 2

http://www.tf2outpost.com/trade/17944731 - sold 3 for 3.11

http://www.tf2outpost.com/trade/17944320 - sold 3.11

http://puu.sh/6VvQY.png - sold 4 bp expanders for 3.11

http://puu.sh/6VyA7.png - sold 4 more at 3.11 each

http://puu.sh/6Vxz6.png - sold 5 more bp expanders

http://puu.sh/6VzFi.png - sold 1 for 3.11

http://puu.sh/6VzGj.png - sold 2 for 3.11 each

http://puu.sh/6VAan.png - sold 2 for 3.11 each

http://puu.sh/6VAgl.png - sold 2 for 3.11 each

http://puu.sh/6VAJP.png - sold 1 for 3.11

http://puu.sh/6VSTf.png - sold 1

http://puu.sh/6VSTN.png - sold 2

http://puu.sh/6VSUx.png - sold 1

3.22

http://www.tf2outpost.com/trade/16152206 - mass seller

3.33 sales

http://www.tf2outpost.com/trade/17897221

http://www.tf2outpost.com/trade/17730542 - 1 add the past week

http://www.tf2outpost.com/trade/17893693 - 2 adds

http://www.tf2outpost.com/trade/17010748

3.55 sales

http://www.tf2outpost.com/trade/17755177

2:1 key

http://www.tf2outpost.com/trade/16728630 - 1 add a week ago

http://www.tf2outpost.com/trade/16730284 - 1 add 3 days ago

3 ref buyers

http://www.tf2outpost.com/trade/16348590

http://www.tf2outpost.com/trade/17487869

http://www.tf2outpost.com/trade/15437163

http://www.tf2outpost.com/trade/17778031

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

http://www.tf2outpost.com/trade/17562306

http://www.tf2outpost.com/trade/17778176

http://www.tf2outpost.com/trade/17883955

http://www.tf2outpost.com/trade/17907321

http://www.tf2outpost.com/trade/17916115

Most buyers are not even successful

3.11 buyers

http://www.tf2outpost.com/trade/17868061

http://www.tf2outpost.com/trade/17937919

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