Christmas Spirit

https://backpack.tf/item/2173755987

Sale 1) Sold to a buy order for 9 Keys + 1 Refined

https://backpack.tf/profiles/76561198204215085#!/compare/1539043200/1539129600

https://backpack.tf/profiles/76561197999873164#!/compare/1539043200/1539129600

Sale 2) Sold for 12 Keys

https://backpack.tf/profiles/76561197999873164#!/compare/1544227200/1544313600

https://backpack.tf/profiles/76561198367921576#!/compare/1544227200/1545955200

https://backpack.tf/item/1973563064

Sale 3) Sold for 12 Keys

https://backpack.tf/profiles/76561198016070169#!/compare/1541635200/1541894400

Sale 4) Bulk sale

https://backpack.tf/profiles/76561198145072434#!/compare/1545004800/1545091200

https://backpack.tf/item/4853184112

Sale 5) ?

https://backpack.tf/profiles/76561198823641017#!/compare/1539043200/1539129600

https://backpack.tf/profiles/76561198200222062#!/compare/1539129600/1539475200

Sale 6) Sold for 8 or 9 Keys

https://backpack.tf/profiles/76561198200222062#!/compare/1540252800/1540339200 - Seller's Backpack

https://backpack.tf/profiles/76561198215130228#!/compare/1540080000/1540339200 - Buyer's Backpack

Sale 7) Sold + Blizzardy Storm Titanium Tyrolean for a Miami Nights Ye Olde Baker Boy

https://backpack.tf/profiles/76561198215130228#!/compare/1540080000/1540339200 - Seller's Backpack

https://backpack.tf/profiles/76561198266876790#!/compare/1540252800/1540339200 - Buyer's Backpack

Sale 8) ?

https://backpack.tf/profiles/76561198266876790#!/compare/1540252800/1540339200 - Seller's Backpack

https://backpack.tf/profiles/76561198121825886#!/compare/1540252800/1540339200 - Buyer's Backpack

Sale 9) Sold + 11 Keys for either a Searing Plasma Private Eye or a Purple Energy Sky High Fly Guy

https://backpack.tf/profiles/76561198121825886#!/compare/1540252800/1540339200 - Seller's Backpack

https://backpack.tf/profiles/76561198006544512#!/compare/1540252800/1540339200 - Buyer's Backpack

Better used for the other hats either way.

Sale 10) Sold for 11 Keys

https://backpack.tf/profiles/76561198006544512#!/compare/1543881600/1543968000

https://backpack.tf/profiles/76561198337538519#!/compare/1543363200/1543968000

IDs match.

Sale 11) Sold for 7 Keys?

https://backpack.tf/profiles/76561198337538519#!/compare/1545868800/1546041600

https://marketplace.tf/items/652;5;u58 - Sold for $22.99 when Keys were ~$1.78 each

https://marketplace.tf/items/5021;6/Mann%20Co.%20Supply%20Crate%20Key

22.99 / 1.78 = 12.91, which rounds to 13 Keys.

Calling 13 Keys a high outlier because of this 4 month Unsold at 12 Keys -> https://imgur.com/a/3hZqQnZ

https://backpack.tf/item/1973563064

https://backpack.tf/item/2225706127