Using last 2 months. Even if I were to include sales from the last failed suggestion, all the sales that would alter the range are now outdated.

Sale 1: - Credit to Bentry Suster

Sold through a scrap.tf auction for 27 keys + 20 ref

https://backpack.tf/profiles/76561198310750043#!/compare/1706140800/1706227200

https://backpack.tf/profiles/76561198008840775#!/compare/1706054400/1706313600

https://backpack.tf/item/14055258059

https://scrap.tf/auctions/MTGJIB

= 27 keys

Sale 2:

Sold for 25 keys

https://backpack.tf/profiles/76561198261265788#!/compare/1703980800/1704067200

https://backpack.tf/profiles/76561198117597416#!/compare/1703894400/1703980800

https://backpack.tf/item/9235757871

= 25 keys

Other Sales:

#1

https://backpack.tf/profiles/76561198257316192#!/compare/1705968000/1706313600

https://backpack.tf/profiles/76561198310750043#!/compare/1706140800/1706227200

https://backpack.tf/item/14055258059

Untraceable

#2

https://backpack.tf/profiles/76561198858001037#!/compare/1703635200/1703894400

https://backpack.tf/profiles/76561198145908569#!/compare/1703808000/1703894400

https://backpack.tf/item/11024707369

Untraceable

#3

https://backpack.tf/profiles/76561198117597416#!/compare/1703980800/1704067200

https://backpack.tf/profiles/76561198134551377#!/compare/1690156800/1704067200

https://backpack.tf/item/9235757871

Untraceable, probably 26 keys

#4

https://backpack.tf/profiles/76561198091527676#!/compare/1706832000/1707004800

https://backpack.tf/profiles/76561198349848918#!/compare/1706918400/1707004800

https://backpack.tf/item/7209628015

Untraceable, 14 keys match on the buyer's end (counting the ones that went to the previous damage dealt strange part owner)

#5

https://backpack.tf/profiles/76561198192632255#!/compare/1704499200/1707350400

https://backpack.tf/profiles/76561198850121720#!/compare/1707264000/1707350400

https://backpack.tf/item/2422474536

Untraceable

#6

https://backpack.tf/profiles/76561197992703391#!/compare/1708128000/1708214400

https://backpack.tf/profiles/76561199132198012#!/compare/1708041600/1708214400

https://backpack.tf/item/13851624888

Untraceable. Gambled prior.

#7

https://backpack.tf/profiles/76561199132198012#!/compare/1708041600/1708214400

https://backpack.tf/profiles/76561198319114954#!/compare/1708128000/1708214400

https://backpack.tf/item/13851624888

Untraceable

#8

https://backpack.tf/profiles/76561198042123361#!/compare/1708041600/1708473600

https://backpack.tf/profiles/76561199029736015#!/compare/1707955200/1708041600

https://gladiator.tf/sales?item=Holy%20Grail%20Taunt:%20The%20Schadenfreude&at=2024-02-17T09:38:25.872Z - labelled as 26 keys + 38.22 ref

https://backpack.tf/item/6846462686

Untraceable. 1 key + 38 ref match

#9

https://backpack.tf/profiles/76561199104559253#!/compare/1708041600/1708128000

https://backpack.tf/profiles/76561199111292616#!/compare/1708041600/1708128000

https://gladiator.tf/sales?item=Holy%20Grail%20Taunt:%20The%20Schadenfreude&at=2024-02-17T09:41:43.339Z - labelled as 26 keys + 38.22 ref

https://backpack.tf/item/601083169

Untraceable.

https://backpack.tf/item/13809875982 - mannco

https://backpack.tf/item/12870221714 - marketplace

https://backpack.tf/item/12800166886 - mannco

https://backpack.tf/item/6369208675 - mannco

Sellers:

https://imgur.com/a/worBqyf

https://backpack.tf/item/6876137066 - 28 keys

https://backpack.tf/item/6846462686 - 30 keys

https://backpack.tf/item/7209628015 - 30 keys

https://backpack.tf/item/2422474536 - ~32.5 keys

https://backpack.tf/item/601083169 - marketplace

https://backpack.tf/item/2688673692 - 50 keys

https://backpack.tf/item/9237508284 - 50 keys

Sales at:

25

27

Additionally, we have several untraceable sales from gladiator.tf that would fall into the range.

https://gladiator.tf/sales?item=Holy%20Grail%20Taunt:%20The%20Schadenfreude&at=2024-02-08T09:54:45.046Z - purchase and sale at 26 keys + 30.55 ref, apparently (though I doubt this, considering snapshots suggest sell/buy orders were ~30 keys at the time)

https://gladiator.tf/sales?item=Holy%20Grail%20Taunt:%20The%20Schadenfreude&at=2024-02-18T09:58:40.870Z - 1 buy at 26 keys + 38.22 ref

https://gladiator.tf/sales?item=Holy%20Grail%20Taunt:%20The%20Schadenfreude&at=2024-02-17T09:58:40.870Z - 2 more buys at 26 keys + 38.22 ref

Taking 25-27 keys.

https://backpack.tf/profiles/76561198182862426#!/compare/1709078400/1709164800

https://backpack.tf/profiles/76561199216835040#!/compare/1708992000/1709078400

https://gladiator.tf/sales?item=Holy%20Grail%20Taunt:%20The%20Schadenfreude - labelled as 23 keys + 45.33 ref

https://backpack.tf/item/2894332257

45.33 ref matches, I'm going to take this sale as listed on gladiator.

= 24 keys

This is currently the only sale at 24 keys. Given buyers at ~24 keys, it should be fine to exclude this for now.