Calling 13 low.

https://backpack.tf/item/7509848639

Sale 1) ?

https://backpack.tf/profiles/76561198327943292#!/compare/1563408000/1563494400

https://backpack.tf/profiles/76561198091267468#!/compare/1563321600/1563408000

Sale 2) Sold for 14 Keys + 13 Refined

https://backpack.tf/profiles/76561198091267468#!/compare/1563667200/1563840000

Rounds to 14 Keys

Sale 3) ?

https://backpack.tf/profiles/76561198302655841#!/compare/1563753600/1563840000

https://backpack.tf/profiles/76561198376331369#!/compare/1563753600/1563840000

Sale 4) Sold for a Nuts and Bolts Larrikin Robin (~9.4 Keys) + 6 Keys

https://backpack.tf/profiles/76561198376331369#!/compare/1564185600/1564272000

https://backpack.tf/profiles/76561198165544523#!/compare/1564012800/1564185600

9.4 + 6 = 15.4, which rounds to 15 Keys

Robin Mini

https://marketplace.tf/items/tf2/314;5;u31 - Sales ranging from 8.75 - 9.75 Keys

https://backpack.tf/profiles/76561198220288908#!/compare/1562630400/1562716800 - Sold + 1 Key for a Festive Aussie Black Box (~11 Keys)

Taking 8.75 - 10 Keys for the Robin

Sale 5) Sold for 15 Keys

https://backpack.tf/profiles/76561198165544523#!/compare/1564185600/1564358400

The items don't cause the sale to round to 16.

Sale 6) Sold + 2 Keys for a Purple Energy Head Full of Hot Air

https://backpack.tf/profiles/76561198154109244#!/compare/1564358400/1564444800

https://backpack.tf/profiles/76561198170358238#!/compare/1564358400/1564444800

This is being used for the Hot Air.

https://backpack.tf/item/7330996225

Sale 7) Sold for 13 Keys

https://backpack.tf/profiles/76561198210943347#!/compare/1557014400/1557532800

https://backpack.tf/profiles/76561198181288034#!/compare/1557273600/1557532800

Low outlier because it immediately flipped for 21 Keys in the next sale.

Sale 8) Sold + 2 Keys + ~2 Keys of Items for a FT Festive Cool Spec KS Leopard Printed Soda Popper (25 Keys)

https://backpack.tf/profiles/76561198181288034#!/compare/1557532800/1557619200

https://backpack.tf/profiles/76561198043810142#!/compare/1557187200/1557619200

https://imgur.com/a/VHrPKtO - Capped by the Buyout of 19 Keys

High outlier.

Sale 9) Sold for a Circling Peace Sign Employee of the Mmmph

https://backpack.tf/profiles/76561198043810142#!/compare/1559001600/1559174400

The Mmmph has no Mini.

https://imgur.com/a/tIgkjdd - 2 Day Seller at 19 Keys, 10 Day Seller at 19 Keys, and a 17 Day Seller at 20 Keys

https://backpack.tf/item/7330996225

https://backpack.tf/item/7509848639

https://backpack.tf/item/7396828521