Sellers:

https://gyazo.com/f98f46ac2a9eb826d5158585a4db905e

http://backpack.tf/item/484783864 11 b/o, 1 day

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Sale #1

http://backpack.tf/profiles/76561198064087834#!/compare/1475280000/1475366400 seller

http://backpack.tf/profiles/76561198011321852#!/compare/1475280000/1475366400 buyer

Sold with a Blizzardy Storm Plumber's Pipe for a Basic ks.Aus.Minigun(18)

Can't find a mini for Pipe

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Sale #2

http://www.tf2outpost.com/trade/28551503

http://backpack.tf/profiles/76561198011321852#!/compare/1477180800/1477267200 seller

http://backpack.tf/profiles/76561198262379224#!/compare/1477180800/1477267200 buyer

Sold for 9 keys + 13.33

Sale total: 10 keys

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Sale #3 sold in a day so taking this as an outlier

http://www.tf2outpost.com/trade/28569784 9 b/o

http://backpack.tf/profiles/76561198287835588#!/compare/1477612800/1477699200 seller

http://backpack.tf/profiles/76561198004517334#!/compare/1477612800/1477699200 buyer

https://gyazo.com/670c577b753e5f3030b5df1c6e203248

1:1 for a S.Dead of Night(9.4)

Sale total: 9 keys

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Let it banana