History 1: https://backpack.tf/item/10174190970

Dumped to a bot:

https://backpack.tf/profiles/76561198398748909#!/compare/1630800000/1630886400

https://backpack.tf/profiles/76561198363395191#!/compare/1630713600/1630800000

https://mannco.store/item/440-haunted-ghosts-unusual-bazaar-bauble

$16.57 / $1.69 = 9.80 keys ~10 keys, no buyout

History 2: https://backpack.tf/item/9156541358

8 keys 10 ref, ~8 keys:

https://backpack.tf/profiles/76561198430141715#!/compare/1630540800/1630627200

https://backpack.tf/profiles/76561198002757046#!/compare/1630454400/1630540800

15 ref matches:

https://backpack.tf/profiles/76561198002757046#!/compare/1631836800/1631923200

https://backpack.tf/profiles/76561198169874774#!/compare/1631577600/1631923200

Buyout was 9 keys 15 ref though https://gladiator.tf/listings?item=Haunted%20Ghosts%20Bazaar%20Bauble

Even though 8 was to a quickbuyer, gonna include it since there's only one buyer at ~8 right now, the rest are at 7.26 https://gladiator.tf/listings/6185822d171c7be1e9e7418a

There's also a buy order dump and a potential sale at ~9 keys. To me 10 flat based off of a Mannco.Store sale alone wouldn't be representative here. Going with 8-10 keys