Offers:

http://www.tf2outpost.com/trade/8951768 - ebenezer -- 3 keys, salvaged #50 -- 4 keys, 4 keys, 3 keys

http://www.tf2outpost.com/trade/10734944 - offer of 4 keys

http://www.tf2outpost.com/trade/8389943 - ebenezer -- 3 keys

http://www.tf2outpost.com/trade/11278949 - 1 key + 15 ref -- 3.9 keys

Sellers below 3 keys:

http://www.tf2outpost.com/trade/10780829 - 8 keys for 3 but he still got an offer of 1 bud for all 3 -- 8 keys each

Sellers at 4 keys:

http://www.tf2outpost.com/trade/11022624 - sold

http://www.tf2outpost.com/trade/11466146 - offer of 3 keys, a few people added for 4 keys

http://www.tf2outpost.com/trade/10476083 - added for 4 keys, gold botkiller rocket launcher mk.II + team captain -- 4.4 keys, 3 keys, salvaged #50 -- 4 keys

Sellers at 5 keys:

http://www.tf2outpost.com/trade/10532737 - a few people added for 5 keys, 4 keys

http://www.tf2outpost.com/trade/11199738 - offer of crate #40 -- 4.25 keys

http://www.tf2outpost.com/trade/10151594 - a few people added for 5 keys

Sellers at 6 keys:

http://www.tf2outpost.com/trade/8271995 - added for 6 keys

Sellers at 7 keys:

http://www.tf2outpost.com/trade/8627557 - a few people added for 7 keys

http://www.tf2outpost.com/trade/8902588 - sold 37 for 7 keys

http://www.tf2outpost.com/trade/10701133 - offer of gold botkiller rocket launcher mk.II + team captain + lords pipe -- 5.1 keys, added for 7 keys

Sellers at 8 keys:

http://www.tf2outpost.com/trade/9776018 - offer of a bill's -- 8 keys, added for 8 keys

http://www.tf2outpost.com/trade/10715923 - sold 3 for 8 keys

Sellers at 10 keys:

http://www.tf2outpost.com/trade/11027422 - added for 10 keys, 3 keys, 4 keys

Buyers:

http://www.tf2outpost.com/trade/11312370 - bought none for 3 keys