Sellers / Sold below 1.8 keys:

http://www.tf2outpost.com/trade/13444639 - 1 key, 2 ref

http://www.tf2outpost.com/trade/13477314 - 1 key, 3 ref

http://www.tf2outpost.com/trade/13452803 - 1 key, 3 ref

http://www.tf2outpost.com/trade/13451127 - 1 key, 3 ref

http://www.tf2outpost.com/trade/13467336 - 1 key, 3 ref

http://tf2tp.com/trade.php?trade=9690610 - 1 key, 3 ref

http://www.tf2outpost.com/trade/13476551 - 1 key, 3 ref

http://tf2tp.com/trade.php?trade=9690655 - 1 key, 3 ref

http://www.tf2outpost.com/trade/13439285 - 1 key, 3 ref

http://www.tf2outpost.com/trade/13442434 - 1 key, 3 ref

http://www.tf2outpost.com/trade/13492507 - 1 key, 3.33 ref

http://www.tf2outpost.com/trade/13446337 - 1 key, 3.33 ref

http://www.tf2outpost.com/trade/13487107 - 1 key, 4 ref

http://www.tf2outpost.com/trade/13487084 - 1 key, 4 ref

http://www.tf2outpost.com/trade/13473838 - 1 key, 4 ref

http://www.tf2outpost.com/trade/13486480 - 1 key, 4 ref

http://www.tf2outpost.com/trade/13468836 - 1 key, 4.33 ref

http://www.tf2outpost.com/trade/13480167 - 1.8 keys

Unsolds for 2 keys:

http://www.tf2outpost.com/trade/13392022 - 3 days

http://www.tf2outpost.com/trade/13403160 - 3 days

http://www.tf2outpost.com/trade/13363192 - 4 days

http://www.tf2outpost.com/trade/13318112 - 6 days

http://www.tf2outpost.com/trade/13096936 - 1 week

http://www.tf2outpost.com/trade/13268482 - 1 week

http://www.tf2outpost.com/trade/13185342 - 1 week

http://www.tf2outpost.com/trade/12984563 - 2 weeks

http://www.tf2outpost.com/trade/13028947 - 2 weeks

Classfields: http://backpack.tf/classifieds/search/id/520003954bd7b8aa17000011

Perhaps it's possible but very hard to sell for 2 keys.

Many sellers for 1.5-1.8 keys, so I think it's good price