Outdated hats are marked with an asterisk(*) next to the price.

Sellers:

http://www.tf2outpost.com/trade/23598268 3 buds B/O (unsold for 1 month)

http://www.tf2outpost.com/trade/24143278 3 buds B/O (young)

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Sale #1:

Tyro > Stormy Storm Bloke's Bucket Hat (1–1.2) + Lantern Shooter's Sola Topi (2*)

Tyro: http://www.tf2outpost.com/trade/24121412

Bloke's + Topi: http://www.tf2outpost.com/trade/23861420

(1.1 + 2) * 0.9 = 2.79 (rounded to 2.8)

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Sale #2:

Tyro + 2 keys > Flies Fez (2.6*)

Tyro: http://www.tf2outpost.com/trade/23134402

BP history: http://backpack.tf/profiles/76561198071286877?time=1413270000

Fez: http://www.tf2outpost.com/trade/22813010

BP history: http://backpack.tf/profiles/76561198121813159?time=1413183600

2.6 * 0.9 = 2.34 - 0.1 = 2.24 (rounded to 2.2)

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Sale #3:

Tyro + Ace's Rebel Rouser (1.5*) > Phantasm Jr. Slick Cut (4–5)

Offered on: http://www.tf2outpost.com/trade/23549172

4.5 - 1.5 = 3

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Minis:

Flaming Lantern Shooter's Sola Topi:

Topi > Stormy Storm Shako (2.25)

Shako: http://www.tf2outpost.com/trade/24103525

Topi: http://www.tf2outpost.com/trade/24123612

2.25 * 0.9 = 2.025 (rounded to 2)

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Massed Flies Familiar Fez:

http://www.tf2outpost.com/trade/22679651 2 buds + 7 keys B/O

Buds = 12.5 keys

2 + (7 / 12.5) = 2.56 (rounded to 2.6)

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Ace's High Rebel Rouser:

Rebel > Gifted P. Fetti Marauder (1.5)

Rebel: http://www.tf2outpost.com/trade/23598268

Marauder: http://www.tf2outpost.com/trade/24157974

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Gifted Purple Confetti Desert Marauder:

Maurader > Specialized Australium Ambassador with parts (19 keys)

Marauder: http://www.tf2outpost.com/trade/24134731

Ambassador: http://www.tf2outpost.com/trade/24150360

Buds = 12.5 keys

19 / 12.5 = 1.52 (rounded to 1.5)

d0 helped me with a lot of stuff <3