Second non-priced item suggestion

Tell me if I'm doing something wrong

Sale #1:

1 key 6 ref

http://www.tf2outpost.com/trade/28473616 (Outpost Listing)

http://backpack.tf/item/4955325017 (Item history)

http://backpack.tf/profiles/76561197997268820#!/compare/1474156800/1474243200 (seller)

http://backpack.tf/profiles/76561198051259613#!/compare/1474243200/1474588800 (buyer)

Sale #2:

1 key

http://www.tf2outpost.com/trade/28450762 (outpost listing)

http://backpack.tf/item/5037330750 (item history)

http://backpack.tf/profiles/76561198046779947#!/compare/1472860800/1473292800 (seller)

http://backpack.tf/profiles/76561198094326273#!/compare/1472947200/1473465600 (buyer)

Sale #3:

1 key

Listing not found

http://backpack.tf/item/5022851443 (item history)

http://backpack.tf/profiles/76561198046779947#!/compare/1473465600/1475539200 (seller)

http://backpack.tf/profiles/76561198137732719#!/compare/1473552000/1475539200 (buyer)

Other stuff I found:

http://www.tf2outpost.com/trade/28444284 (Unsold @ 1.5 keys)

http://backpack.tf/item/5031782966 (item history)

http://www.tf2outpost.com/trade/28516710 ("bp.tf price")

http://backpack.tf/item/5033914846 (item history)

http://www.tf2outpost.com/trade/28503276 (no b/o)

http://backpack.tf/item/5067673544 (item history)

http://www.tf2outpost.com/trade/28452161 (honestly idk wtf to call this)

http://backpack.tf/item/4953127303 (item history)

Any help, counters, and advice are greatly appreciated! Have a good day/night! :D

-SiN

P.S. these take way too freaking long I'm doing my homework now