Usable Sales:

Sale #1:

https://backpack.tf/profiles/76561198074304069#!/compare/1483315200/1483401600 - seller

https://backpack.tf/profiles/76561198074304069?time=1483401600

https://backpack.tf/profiles/76561198085432135#!/compare/1483056000/1483401600 - buyer - not all keys show

B/O: http://www.tf2outpost.com/trade/28671340 - no B/O - sold in 13 days

Sold for 29 keys pure

Sale #2:

https://backpack.tf/profiles/76561198111569541#!/compare/1481500800/1481587200 - seller

B/O: http://www.tf2outpost.com/trade/28651318 - 40 keys - sold in 3 days

Sold for a duped Purple Energy Prancer's Pride (40 keys, mini below)

= 40 keys

Unusable Sale:

https://backpack.tf/profiles/76561198010517907#!/compare/1479513600/1479686400 - seller

https://backpack.tf/profiles/76561198010517907?time=1479686400

= Bulk

Mini:

Mini on the duped Purple Energy Prancer's Pride:

https://backpack.tf/profiles/76561198123569966#!/compare/1483574400/1483660800 - seller

https://backpack.tf/profiles/76561198123569966?time=1483660800

B/O: http://www.tf2outpost.com/trade/28690309 - 40 keys - sold in 6 days

Sold for 40 keys pure

= 40 keys

Sellers:

Outpost

http://www.tf2outpost.com/trade/28698802 - 34 keys - 1 week

http://www.tf2outpost.com/trade/28713558 - no B/O - 2 days

Classifieds http://imgur.com/a/63upY

https://backpack.tf/item/4741738045 - 28 keys - 2 days

https://backpack.tf/item/348897835 - 34 keys - young

https://backpack.tf/item/609587218 - 42 keys - 1 month