Sellers:

https://gyazo.com/02de8570899ef7c9e7b2db8390da508a

http://backpack.tf/item/3979952648 21 keys

http://www.tf2outpost.com/trade/28564844 same seller as the one in classifieds - 21 keys (1week)

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Sale #1

http://www.tf2outpost.com/trade/28470944

http://backpack.tf/profiles/76561198088878793#!/compare/1473292800/1473379200 seller

http://backpack.tf/profiles/76561198049772894#!/compare/1473379200/1473552000 buyer

Sold for 19 keys

Sale total: 19 keys

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Sale #2

http://www.tf2outpost.com/trade/28564714 22 b/o reposted from http://www.tf2outpost.com/trade/28562898

http://backpack.tf/profiles/76561198049772894#!/compare/1477440000/1477526400 seller

http://backpack.tf/profiles/76561198108608612#!/compare/1477353600/1477440000 buyer

Sold with 4 keys for a Stormy Storm Front Runner(25)

25 - 4 = 21 keys

Sale total: 21 keys

Mini for Front Runner

https://gyazo.com/82ac6e1fe0f52716673709eeb71fe3a5

http://backpack.tf/item/1361029207

http://backpack.tf/item/1440297113

http://backpack.tf/item/2863071920

Using 25 keys

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Let it banana