Usable Sales:

Sale #1:

https://backpack.tf/profiles/76561197991710013#!/compare/1476057600/1476403200 - buyer

https://backpack.tf/profiles/76561197964782863#!/compare/1476230400/1476489600 - seller - not all keys show

Sold for 350 keys pure

B/O: http://www.tf2outpost.com/trade/28508718 - no B/O - took 17 days to sell

= 350

Sale #2:

https://backpack.tf/profiles/76561197965601027#!/compare/1476403200/1476489600 - buyer

https://backpack.tf/profiles/76561198126204929#!/compare/1476403200/1476489600 - seller

Sold for a Burning Flames Deep Cover Operator (685 keys)

B/O: http://www.tf2outpost.com/trade/28422103 - no B/O - took 27 days to sell

= 685 keys

Sale #3:

https://backpack.tf/profiles/76561198085269574#!/compare/1469232000/1469318400 - seller

https://backpack.tf/profiles/76561198126204929#!/compare/1469232000/1469318400 - buyer

Sold for a Haunted Phantasm Jr Hong Kong Cone (385 keys) + Circling Heart Chill Chullo (150 keys) + Disco Beat Down War Pig (125 keys) + 14 keys in sweets

B/O: http://www.tf2outpost.com/trade/28359972 - 800 keys - took 1 day to sell?

= 674 keys

Unusable Sale:

https://backpack.tf/profiles/76561198030595729#!/compare/1469059200/1469232000 - seller

https://backpack.tf/profiles/76561198085269574#!/compare/1469145600/1469232000 - buyer

Sold with a It's A Secret To Everybody Brown Bomber (400 keys) for a Scorching Flames War Pig (947.5 keys)

B/O: http://www.tf2outpost.com/trade/28333609 - no B/O - took 8 days to sell

= Was used to price the War Pig

Sales at: 350, 685, 674