Cleaning up the old suggestion as there were too many new sales to add.

Item 1: https://backpack.tf/item/235895273

Sale 1

https://backpack.tf/profiles/76561198056793885#!/compare/1686700800/1686787200

June 2023. 84 keys.

Sale 2

https://gyazo.com/8b3db88e3c2e12732616c05c2ac780ae

August 2023, 68 keys and 50+ in metal, rounding up to 69.

Sale 3

https://backpack.tf/profiles/76561198347885088#!/compare/1688256000/1689897600

July 2023. Untraceable.

Sale 4

https://backpack.tf/profiles/76561198347885088#!/compare/1689897600/1690934400

July 2023. Untraceable.

Item 2: https://backpack.tf/item/245645220

Sale 5

https://steamcommunity.com/market/listings/440/Unusual%20A%20Rather%20Festive%20Tree

https://gyazo.com/f5085c3093b3f182ca274730e35eae7f

August 17, 2023. Sold on SCM for HK$ 1438.58. The average key price of that specific time (2 pm) on SCM was HK$ 17.76 and the tradable time for this hat perfectly aligns with the SCM sale. 1438.58/17.76=81 keys.

Item 3: https://backpack.tf/item/362044399

Sale 6

https://backpack.tf/profiles/76561198061779536#!/compare/1690156800/1690416000

July 2023. Bulk, untraceable.

Item 4: https://backpack.tf/item/206354186

Sale 7

https://backpack.tf/profiles/76561198064785839#!/compare/1692144000/1692403200

August 2023. Sold for a Sunbeams Tree (53.5) and 10 keys. There were no recent sales on Sunbeams Tree to give it a proper price as its current price was 2 years ago, so I'm excluding this one.

Sale 8

https://backpack.tf/profiles/76561198242073218#!/compare/1630627200/1693440000

https://backpack.tf/profiles/76561198316071886#!/compare/1693353600/1693440000

August 2023. BO was 85 keys and the seller's backpack did show he received 85 keys in one session.

Sale 9

https://backpack.tf/profiles/76561198064785839#!/compare/1692403200/1692748800

https://backpack.tf/profiles/76561198316071886#!/compare/1692489600/1692662400

August 2023. Sold along with 35 keys for a Scorching Flames Towering Pillar of Hats (84).

== Mini on SF Towering Pillar of Hats ==

https://mannco.store/item/440-scorching-flames-unusual-towering-pillar-of-hats

2 sales on mannco.store on June 21 and 22, 2023. The average key price at mannco.store during those 2 days was $1.8. Each was sold for $144.44.

144.44/1.8=80 keys.

https://marketplace.tf/items/tf2/135;5;u14

August 1, 2023. The average key price of that day was $1.95.

249.99/1.95=128 keys.

== Mini ends here ==

Item 5: https://backpack.tf/item/219470621

Sale 10

https://backpack.tf/profiles/76561197995330004#!/compare/1689897600/1693008000

August 2023. Untraceable

Sale 11

https://backpack.tf/profiles/76561199085116273#!/compare/1692748800/1692835200

https://gladiator.tf/time-machine?item=Burning+Flames+A+Rather+Festive+Tree&at=2023-08-24T10%3A38%3A00.000Z

August 2023. Time Machine from gladiator.tf shows the listing is at 69 keys + 30 ref.

Item 6: https://backpack.tf/item/208531447

Sale 12

https://backpack.tf/profiles/76561198080235153#!/compare/1692662400/1693008000

August 2023. Untraceable.

69-85. Hopefully this can finally settle down for a while. I'm tired of having to wait for TF2 inventory API to load.