Cloud 9 Magnificent Mongolian

Seller(s)/buyer(s):

https://gyazo.com/21578e1f771cba3f941aa0577d2af741 seller at 13, highest buyer at ~9

https://backpack.tf/item/6333340693 ^

http://www.tf2outpost.com/trade/29629831 12

https://backpack.tf/item/2859450135 ^

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Sale #1

http://www.tf2outpost.com/trade/29618938 11 b/o

https://backpack.tf/profiles/76561198053747026#!/compare/1524441600/1524528000

https://backpack.tf/profiles/76561198142692102#!/compare/1524528000/1524614400

Sold for 10 keys

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Sale #2

http://www.tf2outpost.com/trade/29552018 11 b/o

https://backpack.tf/profiles/76561198213058655#!/compare/1520467200/1520553600

https://backpack.tf/profiles/76561198344429943#!/compare/1520467200/1520553600

Sold for 9 keys

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Sale #3

https://backpack.tf/profiles/76561198070168241#!/compare/1521417600/1521936000

Bulk

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Sales at 9 and 10

Sellers at 12 and 13

Buyers at ~9

Excluding 9 because buyers at that.

= 10

Let it banana