Hear, hear http://forums.backpack.tf/index.php?/topic/47182-major-changes-to-the-unusual-suggestion-rules/

tl;dr: 10% overpay is no longer applied.

This unusual is all sorts of all fucked up.

Sale 1

Sold for Spec Ks Aussie RL + Duped C Hearts Texas Ten gallon + ~4 keys in items

http://backpack.tf/profiles/76561198058600622?time=1450857600&compare=1451203200 Buyer's bp

http://backpack.tf/profiles/76561198135398757?time=1451030400&compare=1451203200 Seller's bp

http://www.tf2outpost.com/trade/27550883

X = 60 + 46 + 4

X = 110

Mini for Rocket Launcher

http://steamcommunity.com/market/listings/440/Strange%20Specialized%20Killstreak%20Australium%20Rocket%20Launcher (~60)

Mini for texas

http://backpack.tf/profiles/76561198044431210?time=1447056000&compare=1447142400

Sold w/ Pro ks Aussie Grenade launcher (~35) + Spec Ks Aussie Black box (~22) + Ghosts Slick Cut (37.5) + Hearts Mirror (50) For Purple Energy Rotation

http://steamcommunity.com/market/listings/440/Strange%20Professional%20Killstreak%20Australium%20Grenade%20Launcher Nade launcher Micro

http://steamcommunity.com/market/listings/440/Strange%20Specialized%20Killstreak%20Australium%20Black%20Box

X + 35 + 22 + 37.5 + 50 = 190

X = 45.5 (46)

Sale 2 (Outlier)

Sold for a KaW Charmers??

http://backpack.tf/profiles/76561198186250457?time=1449820800&compare=1449993600

Sale 3

Sold for 107 keys

http://backpack.tf/profiles/76561198122055584?time=1450512000&compare=1450598400

X = 107

Sale 4

Sold for DBD Law

http://backpack.tf/profiles/76561198079612957?time=1448092800&compare=1448179200

X = 125

Sale 5(outlier)

Sold for Miami Nights Tossle??

http://backpack.tf/profiles/76561198092395439?time=1447488000&compare=1447833600

Sale 6

Sold for abduction phononaut

http://backpack.tf/profiles/76561197996126537?time=1447488000&compare=1447747200

X = 120

Mini for phononaut (credits to deadboom's suggestion)

Sold for a TF DCO + ~27 keys in items

http://backpack.tf/profiles/76561198067161406?time=1446537600&compare=1446451200

http://backpack.tf/profiles/76561198059228117?time=1446451200&compare=1446537600

X = 92.5 + 27

X = 119.5 (120)

Sale 7 (outlier)

Sold GE fortunate son + C9 headsplitter + Aussie Knife

http://backpack.tf/profiles/76561198067161406?time=1447574400&compare=1447747200

Setting a rounded range of 110~125, 4 sales support the range

Feel free to support/counter my proof