Power Surge Front Runner

Credits to Shuffle Spy for Providing the properly Minis

Sale 1)

Sold with 4 keys and ~20 keys in items for Slumber Rracer´s Helmet

https://backpack.tf/profiles/76561198132226518#!/compare/1515283200/1515369600

https://backpack.tf/profiles/76561198033751590#!/compare/1515283200/1515369600

X= to low

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Sale 2)

Sold for Time warp Noir (60) + Strange Festive Sniper Rifle (5 -bots buying price) + 3 pure

https://backpack.tf/profiles/76561198033751590#!/compare/1515024000/1515283200

https://backpack.tf/profiles/76561198066711282#!/compare/1514937600/1515024000

B/o on Noir was 50

http://www.tf2outpost.com/trade/29504851

X= ~58

= 60 rounded

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Sale 3)

Sold woth 2 keys for D@D Lid (43)

https://backpack.tf/profiles/76561198066711282#!/compare/1512864000/1512950400

https://backpack.tf/profiles/76561198347700081#!/compare/1512864000/1512950400

Mini for Liquidator´s Lid

https://backpack.tf/item/3550080889

Lid Sale 1)

Sold + ~2 Keys in Items for a Sunbeams Backbiter's Billycock (39 Keys)

https://backpack.tf/profiles/76561198097135729#!/compare/1512518400/1512604800

39 - 2 = 37 Keys

Lid Sale 2)

Sold + Steaming Master's Yellow Belt (15 Keys) for a Green Black Hole Ye Olde Baker Boy (53.5 Keys) + ~15 Keys of Items

https://backpack.tf/profiles/76561198151835897#!/compare/1513555200/1513641600

53.5+ 15 - 15 = 53.5 Keys

X= 37-53 for lid

Stormy Storm Ninja (45)

https://backpack.tf/profiles/76561198347700081#!/compare/1512950400/1513123200

Micro Ninja

Ninja Sale 1)

Sold for a Terror-Watt Deep Cover Operator (~43 Keys)

https://backpack.tf/profiles/76561198136017741#!/compare/1511568000/1511654400

Ninja Sale 2)

Sold for 33 Keys

https://backpack.tf/profiles/76561198021221797#!/compare/1507420800/1507507200 - Seller's Backpack

https://backpack.tf/profiles/76561198069046514#!/compare/1507420800/1507507200 - Buyer's Backpack

27 of the Keys from the Buyer's Backpack bought the Sulphurous Big Country as seen in the Seller's Backpack:

https://backpack.tf/profiles/76561198116536922#!/compare/1506988800/1507507200

X= 33-43 for ninja

sale 3 is capped from 37 - 53

45 subtracting the 2 keys added puts the sale at 43, rounding up to 45

X_=45

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Sale 4)

Sold with 7 pure for Ninja(40, micro above)

https://backpack.tf/profiles/76561198031041488#!/compare/1512777600/1512950400

X= 33

= 35 (rounded)

Conclusion:

Sales:

35, 38, 60, 45, n/a

Going with 35-45