Sale 1:

Sold for 3 keys + 47 ref (keys were ~60.94 at the time)

https://backpack.tf/profiles/76561199125348079#!/compare/1708732800/1708819200

https://backpack.tf/profiles/76561198059153850#!/compare/1708732800/1708819200

https://gladiator.tf/sales?item=Holy%20Grail%20Taunt:%20The%20Jumping%20Jack&at=2024-02-26T15:11:41.948Z - confirmed

https://backpack.tf/item/12922379929

= 3.75 keys

Sale 2:

Sold with negligible metal for 3 keys

https://backpack.tf/profiles/76561199085308746#!/compare/1713657600/1713744000

https://backpack.tf/profiles/76561198798016614#!/compare/1713657600/1713744000

https://backpack.tf/item/13173161119

= 3 keys

Sale 3:

Sold for 3 keys

https://backpack.tf/profiles/76561198216241727#!/compare/1708387200/1708473600 - Near ID: 14195340285

https://backpack.tf/profiles/76561198289372905#!/compare/1708473600/1708560000

https://backpack.tf/item/6406058388

= 3 keys

Other Sales:

#1

https://backpack.tf/profiles/76561199097845692#!/compare/1710115200/1711497600

https://backpack.tf/profiles/76561198172035674#!/compare/1711411200/1711497600

https://backpack.tf/item/13173161119

Untraceable

#2

https://backpack.tf/profiles/76561198172035674#!/compare/1711411200/1711497600

https://backpack.tf/profiles/76561198169737025#!/compare/1711497600/1711843200

https://backpack.tf/item/13173161119

Untraceable/Bulk

#3

https://backpack.tf/profiles/76561198169737025#!/compare/1711497600/1711843200

https://backpack.tf/profiles/76561199085308746#!/compare/1711756800/1711843200

https://backpack.tf/item/13173161119

Untraceable

#4

https://backpack.tf/profiles/76561198329717103#!/compare/1708387200/1708992000

https://backpack.tf/profiles/76561198122047130#!/compare/1707436800/1708646400

https://backpack.tf/item/12173488422

Untraceable

#5

https://backpack.tf/profiles/76561198122047130#!/compare/1708646400/1708732800

https://backpack.tf/profiles/76561199017959799#!/compare/1708646400/1708732800

https://backpack.tf/item/12173488422

Untraceable, probably gambled.

#6

https://backpack.tf/profiles/76561199017959799#!/compare/1709683200/1709769600

https://backpack.tf/profiles/76561198383523581#!/compare/1708300800/1709769600

https://backpack.tf/item/12173488422

Untraceable, probably gambled

#7

https://backpack.tf/profiles/76561198383523581#!/compare/1708300800/1709769600

https://backpack.tf/profiles/76561199125108615#!/compare/1709683200/1709769600

https://gladiator.tf/sales?item=Holy%20Grail%20Taunt:%20The%20Jumping%20Jack&at=2024-03-07T15:14:21.833Z - labelled as 3 keys + 47.22 ref

https://backpack.tf/item/12173488422

Untraceable

#8

https://backpack.tf/profiles/76561198890990852#!/compare/1710633600/1710806400

https://backpack.tf/profiles/76561199581722058#!/compare/1710720000/1710806400

https://backpack.tf/item/8911713761

Untraceable

#9

https://backpack.tf/profiles/76561199417322816#!/compare/1712707200/1713657600

https://backpack.tf/profiles/76561199522478149#!/compare/1712620800/1712707200

https://backpack.tf/item/8368173441

Untraceable, probably a scammer/alt

#10

https://backpack.tf/profiles/76561199101172467#!/compare/1709078400/1709164800

https://backpack.tf/profiles/76561199043177646#!/compare/1709078400/1709164800

https://backpack.tf/item/6916872264

Untraceable, though most likely sold for the 3 keys + 47.88 ref that appear on the buyer’s end.

#11

https://backpack.tf/profiles/76561199161916038#!/compare/1706745600/1706832000

https://backpack.tf/profiles/76561199376209312#!/compare/1706659200/1706832000

https://backpack.tf/item/6406058388

Untraceable, seller is a gambler, so probably gambled.

#12

https://backpack.tf/profiles/76561199376209312#!/compare/1706659200/1706832000

https://backpack.tf/profiles/76561198216241727#!/compare/1706745600/1706832000

https://backpack.tf/item/6406058388

Untraceable

#13

https://backpack.tf/profiles/76561199203680409#!/compare/1713398400/1713484800

https://backpack.tf/profiles/76561199591888128#!/compare/1712966400/1713484800

https://backpack.tf/item/6368939060

Untraceable

https://backpack.tf/item/9587353706 - mannco

https://backpack.tf/item/7427107963 - scrap

https://backpack.tf/item/6772880777 - scammer/marketplace

Sellers:

https://imgur.com/a/2Jt5Pbj

https://backpack.tf/item/6916872264 - ~3.6 keys

https://backpack.tf/item/7348382797 - 7 keys

https://backpack.tf/item/6772880777 - marketplace

https://backpack.tf/item/6819060720 - marketplace

https://backpack.tf/item/8597052535 - marketplace

https://backpack.tf/item/6258669838 - marketplace

https://backpack.tf/item/6252740962 - marketplace

https://backpack.tf/item/11938010947 - marketplace

https://backpack.tf/item/6447253657 - marketplace

https://backpack.tf/item/9587353706 - marketplace

https://backpack.tf/item/6264086455 - marketplace

Sales at:

3 (2x)

3.75

Not too keen on excluding 3.75 with the lone seller, when they’re selling for pretty much the exact same price in keys/metal as the 3.75 key sale we have. Additionally, #7 and potentially #10 would support the price of 3.75 keys. I’d prefer to suggest at 3-3.6 for these specific cases, but I'll stick with 3-3.75 for now.

Taking 3-3.75 keys.