2 years, again. It's 1 year, /me dummy.

Sale 1

Sold for 54 keys

http://backpack.tf/profiles/76561198063474724#!/compare/1467849600/1467936000 (sort by time)

http://www.tf2outpost.com/trade/28317767 ----- He received an offer of 75 keys on July 8th, after he sold it.

=======> Not using

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Sale 2

Sold with a Strange Cold Snap Coat (6.75) for a Pro. Ks. Aussie RL (mini at 71)

http://backpack.tf/profiles/76561198183957075#!/compare/1467676800/1467849600

http://www.tf2outpost.com/trade/28313716 ----- B/O was 90 keys, was looking for an aussie RL.

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Mini for the RL: The same RL (Fire Horns/Team Shine) sold with a Pro. Ks. Shotgun (micro at 5) + Pro. Ks. Escape Plan (micro at 3) for 79 keys

http://backpack.tf/profiles/76561198183957075#!/compare/1468281600/1468368000

Micros: Sellers for ~3 keys for the Escape Plan and ~5 keys for the Shotgun.

http://imgur.com/a/enha2

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=======> 79 - 5 - 3 - 6.75 = 64 keys

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Sale 3

Sold for a Strange Hot Pro. Ks. FT Masked Mender Medi Gun (mini at 96)

http://backpack.tf/profiles/76561198183957075#!/compare/1467072000/1467158400

http://www.tf2outpost.com/trade/28281144 ----- B/O was 80 keys

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Mini for the Medigun: Sold for a GE Reggae (67) + Pro. Ks. Aussie Wrench (micro at 29)

http://backpack.tf/profiles/76561198044333971#!/compare/1468800000/1468886400

Micro for the Wrench: Sellers for 29 keys, taking 29. http://imgur.com/a/3TFza

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=======> 67 + 29 = Capped at 80 keys

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Sale 4

Sold with 20 keys for a Cloud 9 Brotherhood (100 at the time)

http://backpack.tf/profiles/76561198125791160#!/compare/1463702400/1463788800

http://www.tf2outpost.com/trade/28166885 ----- No B/O

=======> 80 keys

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Sellers

- http://imgur.com/a/Xpqn8 ----- 79 keys for more than 2 weeks ( http://backpack.tf/item/282660054 ).

Summary

- Sales for 64, 80, 80. Seller for 79.

Going with 79-80 keys. Why am i not including the sale for 64 keys? Well, there was an offer of 75 keys pure in sale 1, which happened after it was (quick)sold. The guy who sold it for ~64 was looking for an Aussie RL. There are also two sales for 80.

Criticism appreciated!