Sale #1

https://backpack.tf/item/15472539261

13 keys

https://backpack.tf/profiles/76561198173677831#!/compare/1740960000/1741737600

Sale #2

https://backpack.tf/item/15446478706

Crimbo + Unusual Taunt: Time Out Therapy Unusualifier (4 keys) + 13 keys for a Stormy Storm Coldsnap Cap

https://backpack.tf/profiles/76561199014107364#!/compare/1745107200/1745452800

No mini for the Coldsnap, but buy orders at 33 & sellers at 35 so I'll call it 34 here

34 - 13 - 4 = 17

Calling it 17 keys

Sale #3

https://backpack.tf/item/15390876131

Bulk

https://backpack.tf/profiles/76561198380634252#!/compare/1745884800/1745971200

Current sellers:

14 keys on bp.tf

14.41 keys on bp.tf

15 keys on bp.tf

$39.99 on mp.tf

Taking 13-17