Item 1:

https://backpack.tf/item/6284272674

Sale 1:

Sold for Burning Flames Crone's Dome (760 Keys) + Blizzardy Storm Master's Yellow Belt (225 Keys)

+ Blizzardy Storm Bonk Boy (300) + 49 Keys = 1334 → Rounding down to 1350 Keys

https://backpack.tf/profiles/76561198114764948#!/compare/1730332800/1730505600

https://backpack.tf/profiles/76561199241219836#!/compare/1730246400/1730419200

Sale 2:

Sold for Spellbound Ye Oiled Baker Boy + Frostbite Ground Control (Don't think the keys on buyer side is related) - Better used for Spellbound Ye Oiled Baker Boy

https://backpack.tf/profiles/76561199241219836#!/compare/1731024000/1731110400

https://backpack.tf/profiles/76561198058356352#!/compare/1731024000/1731110400

Sale 3:

Sold for 1700 Keys

https://backpack.tf/item/12941294456 (Key history has the buyer; Three-Piece Suit is likely an alt or something)

https://backpack.tf/profiles/76561198058356352#!/compare/1734566400/1734652800

https://backpack.tf/profiles/76561199782741756#!/compare/1734480000/1734652800

//

Total Sales

1350, 1700

https://imgur.com/eoHuI85

Taking 1350 - 1700 Keys