Event preparation.

https://backpack.tf/item/3341230689

Sale 1) Sold for $249.99

https://marketplace.tf/items/tf2/383;5;u89

https://backpack.tf/profiles/76561198082394411#!/compare/1563235200/1563321600

High outlier.

https://backpack.tf/item/3341259628

Sale 2) Sold for a Blizzardy Storm Federal Casemaker (38.5 Keys) + Miami Nights Ye Olde Baker Boy (21 Keys)

https://backpack.tf/profiles/76561198254861074#!/compare/1559001600/1559174400

38.5 + 21 = 59.5, which rounds to 60 Keys

Casemaker Mini

https://backpack.tf/profiles/76561198156375472#!/compare/1561248000/1561680000 - Sold for a BS Kabuto (22 Keys) + BS Hallmark (14.5 Keys) + Kazotsky (~1.5 Keys)

https://backpack.tf/profiles/76561198165934162#!/compare/1563494400/1563580800 - Sold for 39 Keys

https://backpack.tf/profiles/76561198232041512#!/compare/1565481600/1565568000 - Sold for a Duped GE Gym Rat + ~3 Keys of Items

Taking 38.5 Keys for the Casemaker.

[i]Kabuto Mini

https://backpack.tf/suggestion/5d55e3d96780723ec73c98e5 - 22 Keys

Baker Mini

https://backpack.tf/suggestion/5d55e763678072420b4c5c50 - 21 Keys

Sale 3) Bulk sale for a Circling TF Logo Noh Mercy

https://backpack.tf/profiles/76561198157452762#!/compare/1560211200/1560297600

Sale 4) Sold for $134.64 when Keys were ~$1.85 each

https://marketplace.tf/items/tf2/383;5;u89

https://marketplace.tf/items/tf2/5021;6

134.64 / 1.85 = 72.78, which rounds to 73 Keys

https://imgur.com/a/i6AkV4d - Capped by the Buyout of 67 Keys

https://backpack.tf/item/3272966390

Sale 5) Bulk sale for a Searing Plasma Bedouin Bandana

https://backpack.tf/profiles/76561198061376237#!/compare/1560211200/1560297600

Sale 6) ?

https://backpack.tf/profiles/76561198115062041#!/compare/1560816000/1560902400

https://backpack.tf/profiles/76561198280357510#!/compare/1560816000/1560902400

badhitreg says he quickbought it for <60 Keys.

Sale 7) Sold for a GE Geisha (30 Keys) + DBD Titanium Tyrolean + 15 Keys + SGG Schadenfreude (12 Keys) + ~4 Keys of Items + 2 Keys

https://backpack.tf/profiles/76561198280357510#!/compare/1562803200/1562889600

https://backpack.tf/profiles/76561198280357510#!/compare/1564358400/1564444800

The trade was broken up into 2 pieces, according to badhitreg, where the 15 Keys were paid later.

https://imgur.com/a/zXfJbTU - Capped by the Buyout of 71 Keys