These need a bump down.

Unsold-sellers:

http://www.tf2outpost.com/trade/12736499 2 days, 3 keys 3 ref

http://www.tf2outpost.com/trade/12622588 5 days, 3 keys 2 ref

http://www.tf2outpost.com/trade/12801117 8 hours, 3 keys

http://www.tf2outpost.com/trade/12721850 2 days, 3 keys

http://www.tf2outpost.com/trade/12715772 2 days, 12 ref (2.14 keys)

...The rest want 4+ keys and have been trying to sell for a long time.

Sellers-sold:

http://www.tf2outpost.com/trade/12528007 3 keys (my trade)

Proof by Necro Ted:

http://www.tf2outpost.com/trade/12590501 3 keys 2 ref

http://www.tf2outpost.com/trade/12553950 3 keys 3 ref

You can find sellers at 3 keys to 3 keys 3 ref. Anything above doesn't sell.