Below 3 seems to be a quicksell. Even 3 seems to go fast.

0.3 keys = 2 ref.

Quicksales:

http://www.tf2outpost.com/trade/16851005 - Sold in 7 views at 2.7.

http://www.tf2outpost.com/trade/16813502 - Sold in 8 views at 2.7.

Sold at 3 keys or more:

http://www.tf2outpost.com/trade/12495902 - Sold multiple at 3 keys, added 6 hours ago.

http://www.tf2outpost.com/trade/9478379 - Sold out at 3 keys + 1 ref, added 10 hours ago.

http://www.tf2outpost.com/trade/11984187 - Sold at 4 keys, 2 adds in the last 5 days

http://www.tf2outpost.com/trade/16715237 - Sold at least one for 3.3 keys, offered 3.5 keys.

http://www.tf2outpost.com/trade/16481242 - Offered 3 keys.

http://www.tf2outpost.com/trade/16849746 - Sold in 3 hours at 3 keys.

http://www.tf2outpost.com/trade/16839510 - Sold instantly at 3 keys.

http://www.tf2outpost.com/trade/16832404 - Sold instantly at 3 keys.

http://www.tf2outpost.com/trade/16823003 - Sold instantly at 3 keys.

http://www.tf2outpost.com/trade/16809594 - Sold instantly at 3 keys.

http://www.tf2outpost.com/trade/16796084 - Sold 2 in 1 day at 3 keys.

http://www.tf2outpost.com/trade/16787070 - Sold at 3 keys.

http://www.tf2outpost.com/trade/16087741 - Interested buyer at 3 keys.

http://www.tf2outpost.com/trade/14928920 - Offered 3.3 keys.

Others:

http://www.tf2outpost.com/trade/16852530 - Seller at 3 keys, 2 hours old. Let's see how he goes.

http://www.tf2outpost.com/trade/14587008 - Quickbuyer at 2 keys + 5 ref, resells for 3 keys.

Very conservative bump here. Please keep comments friendly and relevant.