8 month old price.

http://www.tf2outpost.com/trade/20202502

-b/o 27 keys (1.6)

http://www.tf2outpost.com/trade/19839087

-b/o 1.8

Sales

http://www.tf2outpost.com/trade/19666991

-b/o 1.6, most likely sold for that. Backpack histories are unreliable.

http://www.tf2outpost.com/trade/19635797 --> http://www.tf2outpost.com/trade/19659896

-Sold for a bud + 3 keys? (~1.2 at the time, outlier?)

http://www.tf2outpost.com/trade/19580675 --> http://www.tf2outpost.com/trade/19615126

-Sold for bliz. soldered sensei (~1.6)

http://www.tf2outpost.com/trade/19545087 --> http://www.tf2outpost.com/trade/19579797

-Sold for AH Buckaroos. (b/o 1.9 here: http://www.tf2outpost.com/trade/20010946 and is ~1.7 after x.9 overpay, probably way less though)

http://www.tf2outpost.com/trade/19508273

-b/o 1.5

http://www.tf2outpost.com/trade/19997159

-sold for SS Spartan (offered on, 1.4)

http://www.tf2outpost.com/trade/19672472

-sold for flies kabuto --> http://www.tf2outpost.com/trade/19707893 (~1.5)

http://www.tf2outpost.com/trade/19623886

-b/o 1.7

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