Sale 1:

https://backpack.tf/item/9281693044

https://marketplace.tf/items/tf2/30919;5;u3043

March 13th, $59.99

59.99 / 2.19 = 27.39, rounds to 27 keys

Sale 2:

https://backpack.tf/item/6539904593

https://marketplace.tf/items/tf2/30919;5;u3043

December 18th, $55.00

55.00 / 2.03 = 27.09, rounds to 27 keys

Sale 3:

https://backpack.tf/profiles/76561198023184551#!/compare/1608076800/1608249600

https://backpack.tf/profiles/76561198264302954#!/compare/1607731200/1608249600

25 keys

This is back on December 16th and I could not obtain a snapshot for this date. However there was another seller listed at 25 keys, suggesting 25 keys is likely the correct price.

https://gladiator.tf/listings/5fde704e0f3df8967d15a7ce

Sale 4:

https://backpack.tf/profiles/76561198047239660#!/compare/1610928000/1611014400

https://backpack.tf/profiles/76561198838637314#!/compare/1610841600/1611014400

SCM

Sale 5:

https://backpack.tf/profiles/76561198111860392#!/compare/1614643200/1614816000

https://backpack.tf/profiles/76561198328282971#!/compare/1614643200/1614729600

Bulk for Isotope Spectrum Splattered Sniper Rifle (Factory New)

Sale 6:

https://backpack.tf/profiles/76561198292137994#!/compare/1610236800/1610323200

https://backpack.tf/profiles/76561198018533542#!/compare/1610064000/1610323200

Bulk

Sale 7:

https://backpack.tf/profiles/76561198099547996#!/compare/1613001600/1613433600

https://backpack.tf/profiles/76561198041930702#!/compare/1613347200/1613520000

Seems to be Emerald Allurement Taunt: The Skating Scorcher

https://backpack.tf/item/9399016553

Unpriced and looking at the current sellers for this, may be an outlier, maybe there's something missing here. Not using.

Sale 8:

https://backpack.tf/item/9281693044

https://i.imgur.com/zTsNwXI.png

$32.79 SCM ~13 keys

Sale 9:

https://backpack.tf/profiles/76561199069472222#!/compare/1611532800/1612051200

https://backpack.tf/profiles/76561198099547996#!/compare/1611360000/1612051200

Hot Alpine Wrench (Minimal Wear)

Mini Hot Alpine Wrench (Minimal Wear):

https://backpack.tf/profiles/76561198117632385#!/compare/1614211200/1614297600

https://backpack.tf/profiles/76561198091863983#!/compare/1611100800/1614297600

Isotope Stabbed to Hell Knife (Minimal Wear)

https://backpack.tf/profiles/76561198117632385#!/compare/1612310400/1612396800

https://backpack.tf/profiles/76561198348959432#!/compare/1612310400/1612396800

Laugh-O-Lantern Warhood

The value of this wrench is probably around 25-30 keys.

Current sellers @ 30 keys

https://gladiator.tf/listings/604f969fe3ea691676c17e1b