Representation

https://backpack.tf/item/329295668

Sale 1) Sold for 45 Keys?

https://backpack.tf/profiles/76561198344933095#!/compare/1525305600/1525392000

https://backpack.tf/profiles/76561198210926117#!/compare/1524787200/1525392000

https://imgur.com/a/4prswyF - Can't prove the sale, so I'm not including it

https://backpack.tf/item/627606028

Sale 2) Sold for a Searing Plasma Human Cannonball + 7 Keys

https://backpack.tf/profiles/76561198086793593#!/compare/1524268800/1524355200

http://www.tf2outpost.com/trade/29615528 - Capped by the Buyout of 40 Keys

Sale 3) Sold for a Green Confetti Vive la France (53 Keys) + 4 Keys

https://backpack.tf/profiles/76561198086793593#!/compare/1525392000/1525478400

High outlier.

Vive Mini

https://backpack.tf/profiles/76561198080691328#!/compare/1525219200/1525651200 - Sold for a Stormy Storm Tipped Lid (46 Keys) + 6 Keys

https://backpack.tf/profiles/76561198080691328#!/compare/1529539200/1529712000 - Sold for 31 Keys

https://backpack.tf/profiles/76561198262354524#!/compare/1530057600/1530144000 - Sold for an OF Djustice (18 Keys) + P. Fetti Fro + 2 Taunts + ~3 Keys of Items

https://backpack.tf/profiles/76561198262354524#!/compare/1530403200/1530489600 - Sold for a Terror-Watt Headsplitter + Smoking Boxcar

https://backpack.tf/profiles/76561198298979151#!/compare/1530403200/1530489600 - Buyer's side for the Headsplitter sale

http://www.tf2outpost.com/trade/29697996 - Capped by the Buyout of 50 Keys

https://backpack.tf/profiles/76561198298979151#!/compare/1530576000/1530662400 - Sold for a P. Fetti Company (27 Keys) + Starstorm Slumber Mo'Horn

Taking 50 - 56 Keys.

Tipped Micro

https://backpack.tf/suggestion/5b39295744325a165100f88b - 46 Keys

Djustice Micro

https://backpack.tf/suggestion/5b48d4b844325a60a856b1ca - 18 Keys

Company Micro

https://backpack.tf/suggestion/5b46f47044325a6611388113 - 27 Keys

Sale 4) Sold for a Haunted Phantasm RPS + 2 Keys

https://backpack.tf/profiles/76561198051758127#!/compare/1525651200/1525737600

This should update the RPS.

Sale 5) Sold for a Smoking Ninja Hood (34 Keys) + 12 Keys

https://backpack.tf/profiles/76561198086793593#!/compare/1525824000/1525910400

34 + 12 = 46 Keys

Ninja Mini

https://backpack.tf/suggestion/5b48df25cf6c7552c865f2bd - 34 Keys

Sale 6) Sold for a Neutron Star Modest Metal Pile of Scrap (27.5 Keys)

https://backpack.tf/profiles/76561198068697940#!/compare/1528588800/1529798400

Low outlier.

Scrap Mini[b]

42 + 1 = [b]43 Keys

Sale 8) Sold + 2 Keys for a Scorching Flames Tippler's Tricorne (52 Keys)

https://backpack.tf/profiles/76561198079764636#!/compare/1530835200/1530921600

52 - 2 = 50 Keys

Sale 9) Bulk sale for a Searing Plasma Cotton Head

https://backpack.tf/profiles/76561198273802196#!/compare/1530921600/1531008000

https://backpack.tf/profiles/76561198086793593#!/compare/1530921600/1531008000

Sale 10) Sold for a Memory Leak Wraith Wrap + 9 Keys

https://backpack.tf/profiles/76561198086793593#!/compare/1530921600/1531008000

Using this for the Wraith.

https://marketplace.tf/items/397;5;u11 - Sold for $100 when Keys were ~$1.94 each

100 / 1.94 = 51.54, which rounds to 52 Keys

Sales at: 28, 40, 43, 46, 50, 52, 57

Calling 28 low and 57 high.