Unsold

http://www.tf2outpost.com/trade/6363422 (1 week old. Only offer is 5 keys)

http://www.tf2outpost.com/trade/6542903 (6 days old. Wants 4.5 keys)

http://www.tf2outpost.com/trade/6638863 (2 days old. Wants 5 keys)

http://www.tf2outpost.com/trade/6601175 (4 days old. Wants 6 keys with 0 offers)

http://www.tf2outpost.com/trade/6233641 (2 weeks old. Best offer of 5 keys pure)

http://www.tf2outpost.com/trade/6610939 (3 days old. Wants 5 keys)

http://www.tf2outpost.com/trade/6679429 (Less than a day old. Wants 5 keys)

http://www.tf2outpost.com/trade/6604695 (4 days old. Wants 5 keys)

http://www.tf2outpost.com/trade/6687084 (Less than a day old. Wants 6 keys)

Unsold and painted

http://www.tf2outpost.com/trade/6474967 (Olive. 1 week old. Buyer paying 5 keys)

http://www.tf2outpost.com/trade/6321834 (Green, 2 weeks old. Wants 6 keys+)

http://www.tf2outpost.com/trade/6564154 (Olive. 5 days old. Willing to sell for 5 keys)

http://www.tf2outpost.com/trade/6453606 (Greed. 1 week old. Only offer is 4 keys)

http://www.tf2outpost.com/trade/6258316 (Black. 2 weeks old. Wants 8 keys)

Sold

http://www.tf2outpost.com/trade/6612703 (Sold 1 for 5 keys and wants 5 for the other)

http://www.tf2outpost.com/trade/6472659 (Sold for 5 keys)

http://www.tf2outpost.com/trade/6305646 (Claims to have sold it for 5 keys + 1 ref)

The other ones on the market are either being sold in a set or have no evidence of what they sold for.

Went and looked at what buyers were paying. Most that aren't lowballing are offering 4-4.5 keys, usually in metal but only 1 person has been successful.

http://www.tf2outpost.com/trade/6427329

http://www.tf2outpost.com/trade/6603190

http://www.tf2outpost.com/trade/6363316

http://www.tf2outpost.com/trade/6363446

http://www.tf2outpost.com/trade/6655633 (Bought one for 4 keys)

http://www.tf2outpost.com/trade/6529453

http://www.tf2outpost.com/trade/6601738

http://www.tf2outpost.com/trade/6640247

http://www.tf2outpost.com/trade/6424305

http://www.tf2outpost.com/trade/6678258