The Sale:

Sold for 7 keys (buyer's end)

https://backpack.tf/profiles/76561199084784906#!/compare/1703894400/1703980800

https://backpack.tf/profiles/76561198137322463#!/compare/1703894400/1703980800

https://backpack.tf/item/12711242870

= 7 keys

Other Sales:

#1

https://backpack.tf/profiles/76561198084086593#!/compare/1701907200/1701993600

https://backpack.tf/profiles/76561199189814852#!/compare/1701907200/1701993600

https://gladiator.tf/sales?item=Holy%20Grail%20Taunt:%20The%20Travel%20Agent&at=2023-12-10T09:32:28.402Z - labelled as 3 keys + 40 ref

https://backpack.tf/item/13855484408

3 keys match.

#2

https://backpack.tf/profiles/76561199093977898#!/compare/1699574400/1702425600

https://backpack.tf/profiles/76561199084784906#!/compare/1699660800/1699747200

https://backpack.tf/item/12711242870

Bulk

Sellers:

https://imgur.com/a/C7XOWzZ

https://backpack.tf/item/13855484408

Sale at 7 keys.

The sale at 7 is a little over a month old now, should be fine to use.

Taking 7 flat for now.

https://backpack.tf/item/12913488152 - found a history containing a possible stn sale. Considering stn currently offering around 6 keys if they get one, it would be best to close this suggestion.

https://backpack.tf/profiles/76561198311498888#!/compare/1703289600/1703376000

https://backpack.tf/profiles/76561198043988930#!/compare/1703289600/1703376000

Compare links don't tell us too much, 11 keys match. There was most likely more involved.

Also a marketplace sale at ~12 keys worth was missed

https://marketplace.tf/items/tf2/31290;5;u3003