Creds Shuffle, Joxu, and Mindacos.

Shuffle's part:

https://backpack.tf/item/1496031062

Sale 1) Sold for a Specialized Killstreak Australium Scattergun (~23 Keys)

https://backpack.tf/profiles/76561198054625956#!/compare/1511481600/1511740800

Sale 2) Sold for 12 Keys + 7 Refined

https://backpack.tf/profiles/76561198323684508#!/compare/1512000000/1512086400 - Buyer's Backpack

Low Outlier.

Sale 3) Quicksold for 14 Keys

https://backpack.tf/profiles/76561198323684508#!/compare/1512086400/1512259200

Sale 4) Sold + 1 Key for an Orbiting Fire Master's Yellow Belt (26 Keys)

https://backpack.tf/profiles/76561198059876944#!/compare/1512086400/1512172800 - Buyer's Backpack

26 - 1 = 25 Keys

Sale 5) Sold + Earbuds (~2 Keys) + 1 Key for an Orbiting Planets Master's Yellow Belt (21 Keys)

https://backpack.tf/profiles/76561198301015840#!/compare/1512432000/1512518400 - Buyer's Backpack

21 - 2 - 1 = 18 Keys

https://backpack.tf/suggestion/5a2c6f77cf6c753eef02c0ff

https://backpack.tf/item/2926175537

Sale 6) Bulk sale for a Well-Worn Hot Quack Canvassed Shotgun

https://backpack.tf/profiles/76561198081729993#!/compare/1511049600/1511136000

Sale 7) Sold + Zoomin' Broom (~2 Keys) for a Holy Grail Most Wanted

https://backpack.tf/profiles/76561198125023131#!/compare/1512518400/1512604800

Taunt for Taunt sales aren't the best to use.

Joxu's part:

Sale #8

https://backpack.tf/profiles/76561198096705335#!/compare/1513036800/1513468800

https://backpack.tf/profiles/76561198091733339#!/compare/1512950400/1513036800

Idk

Sale #9

https://backpack.tf/profiles/76561198125023131#!/compare/1512864000/1512950400

Sold for 15 keys + ~1 key in ref?

Sale #10

https://backpack.tf/profiles/76561198125023131#!/compare/1513036800/1513123200

https://backpack.tf/profiles/76561198200842223#!/compare/1513036800/1513123200

Sold for a C.Heart Airdog?

Sale #11

https://backpack.tf/profiles/76561198200842223#!/compare/1513382400/1513468800

https://backpack.tf/profiles/76561198083460262#!/compare/1513382400/1513468800

Sold with a key + 13 ref for a Mega Strike Taunt: Square Dance

Sale #12

https://backpack.tf/profiles/76561198083460262#!/compare/1513468800/1513555200

https://backpack.tf/profiles/76561198119557421#!/compare/1512259200/1513468800

Histories don't match, 12 keys + 10 ref?

Sale #13

https://backpack.tf/profiles/76561198124938865#!/compare/1514419200/1514505600

https://backpack.tf/profiles/76561198297023624#!/compare/1514505600/1514592000

Sold for a KaW Little Buddy

Sale #14

https://backpack.tf/profiles/76561198222759124#!/compare/1514246400/1514419200

Idk

Sale #15

https://backpack.tf/profiles/76561198119523579#!/compare/1512864000/1513036800

https://backpack.tf/profiles/76561198031469492#!/compare/1512950400/1513036800

Sold for a Holy Grail Taunt: Spent Well Spirits

Sale #16

https://backpack.tf/profiles/76561198031469492#!/compare/1514419200/1514592000

https://backpack.tf/profiles/76561198162282453#!/compare/1514505600/1514592000

Bulk

Sale #17

https://backpack.tf/profiles/76561198145843391#!/compare/1513036800/1513123200

https://backpack.tf/profiles/76561198090602679#!/compare/1513036800/1513123200

Sold with a Bills for a Skill Gotten Gains Taunt: Rock, Paper, Scissors(20) = ~18

https://backpack.tf/suggestion/5a48af90cf6c7524a664c553 rps = 20

Sale #18

https://backpack.tf/profiles/76561198090602679#!/compare/1513123200/1513209600

https://backpack.tf/profiles/76561198173340103#!/compare/1513123200/1513209600

http://www.tf2outpost.com/trade/29478112

Sold for 14 keys in a day

Sale #19

https://backpack.tf/profiles/76561198173340103#!/compare/1513123200/1513209600

https://backpack.tf/profiles/76561198061779536#!/compare/1513123200/1513209600

Histories don't match

Idk

Sale #20

https://backpack.tf/profiles/76561198061779536#!/compare/1513209600/1513296000

Sold with another taunt for a Circling Heart Airdog + 4 keys

Sale #21

https://backpack.tf/profiles/76561198125023131#!/compare/1513209600/1513296000

https://backpack.tf/profiles/76561198141039310#!/compare/1513555200/1513641600

Sold for a Fountain of Delight Taunt: Yeti Smash ?

Idk

Edit:

https://gyazo.com/fef52a787c49c579062a4a4b5119f302 i guess two of the sellers from mindacos' pic sold or smth

And finally, Creds to Mindacos for the range:

http://prntscr.com/hz91ws

Final Price: 14k-18k