Unsold at 4 keys

http://www.tf2outpost.com/trade/14175020 (20 hours)

http://www.tf2outpost.com/trade/14159619 (1 day)

http://www.tf2outpost.com/trade/14170177 (1 day)

http://www.tf2outpost.com/trade/14168578

+ http://www.tf2outpost.com/trade/14189342

+ http://www.tf2outpost.com/trade/14191656 (1 day in total, S.P.: Airborne Enemies Killed) *

http://www.tf2outpost.com/trade/14142343 (2 days)

http://www.tf2outpost.com/trade/14133418 (2 days)

http://www.tf2outpost.com/trade/14077318 (has 2, 4 days)

http://www.tf2outpost.com/trade/14127223

+ http://www.tf2outpost.com/trade/14185852 (3 days in total, S.P.s: Defenders Killed, Airborne Enemies Killed)

http://www.tf2outpost.com/trade/14090145 (4 days)

http://www.tf2outpost.com/trade/13983460 (4 keys + 0.22 ref, 1 week)

http://www.tf2outpost.com/trade/13824922 (2 weeks, unbumped for 2 days)

http://www.tf2outpost.com/trade/13836872 (2 weeks)

http://www.tf2outpost.com/trade/13782854 (2 weeks, S.P.s: Dominations, Soldiers Killed, Demomen Killed)

http://www.tf2outpost.com/trade/13600853 (3 weeks)

http://www.tf2outpost.com/trade/13505468 (3 weeks)

Selling at 3.5 - 4 keys

http://www.tf2outpost.com/trade/14087130 (3 keys + 3 ref, tried selling for 2 days, not in BP anymore, no new owner in item history) **

http://www.tf2outpost.com/trade/14098767 (3 keys + 3 ref, 3 days, unbumped for 2 days)

http://www.tf2outpost.com/trade/14079563 (3 keys + 3 ref, 4 days, unbumped)

http://www.tf2outpost.com/trade/14055217 (3 keys + 3 ref, 5 days, not in BP anymore, no new owner in item history)

http://www.tf2outpost.com/trade/14011864 (3 keys + 4 ref, 6 days)

http://www.tf2outpost.com/trade/13974621 (buying for 2 keys + 3 ref, 1 week, got an add early, got an offer of 3.5 keys)

http://www.tf2outpost.com/trade/13221588 (3 keys + 5 ref, 1 month)

Then there's still my (lucky?) purchase from some weeks ago: http://i.imgur.com/1f2ZH5M.png (3 keys, name + desc tagged, S.P.: Airborne Enemies Killed)

Notes

[*] possibly got it from his trade http://www.tf2outpost.com/trade/14070674 for 2 keys + 4.33 ref

[**] trade closed