https://marketplace.tf/items/tf2/291;5;u62

https://backpack.tf/item/7956009652

$59.99 / $2.19 = 27.39 keys

https://backpack.tf/profiles/76561199085116273#!/compare/1614556800/1614643200

https://backpack.tf/profiles/76561198091502579#!/compare/1614556800/1614643200

Untraceable

https://backpack.tf/profiles/76561198850121720#!/compare/1621814400/1621900800

https://backpack.tf/profiles/76561198386235523#!/compare/1621555200/1621987200

Untraceable

https://backpack.tf/profiles/76561198850121720#!/compare/1621900800/1621987200

https://backpack.tf/profiles/76561198386235523#!/compare/1621555200/1621987200

The Eldritch Opening Highway Star (37.5 keys) https://backpack.tf/suggestion/60b1423bbd058b47e02a38ac

https://gladiator.tf/listings/60ac2dd6e767142345c88479 32 key buyout

https://backpack.tf/profiles/76561198795826430#!/compare/1614988800/1615075200

https://backpack.tf/profiles/76561198286581911#!/compare/1614988800/1615161600

Untraceable

https://backpack.tf/profiles/76561198286581911#!/compare/1615248000/1615507200

https://backpack.tf/profiles/76561198850121720#!/compare/1615161600/1615248000

Something with the PE Football Helmet? Looks low

https://backpack.tf/profiles/76561198850121720#!/compare/1615334400/1615420800

https://backpack.tf/profiles/76561198065206206#!/compare/1615075200/1615420800

Untraceable

https://backpack.tf/profiles/76561198850121720#!/compare/1615420800/1615507200

https://backpack.tf/profiles/76561198065206206#!/compare/1615075200/1615420800

Untraceable

https://backpack.tf/profiles/76561198065206206#!/compare/1616544000/1616630400

https://backpack.tf/profiles/76561198252026134#!/compare/1616544000/1616630400

Unknown amount, only 20 keys matches

https://backpack.tf/profiles/76561198252026134#!/compare/1618099200/1618185600

https://backpack.tf/profiles/76561198297183050#!/compare/1618012800/1618444800

Untraceable

https://backpack.tf/profiles/76561198297183050#!/compare/1619308800/1619568000

https://backpack.tf/profiles/76561198160124237#!/compare/1618876800/1619308800

Dead Head, around 24 keys at the time https://gladiator.tf/listings/6084f7b79e9315fc5a7f5138

https://backpack.tf/profiles/76561198160124237#!/compare/1619740800/1619827200

https://backpack.tf/profiles/76561197994697258#!/compare/1619654400/1619740800

Strange Aus Sticky Spec KS - Around 24 keys at the time https://gladiator.tf/listings/608a8a70db8b07c56ca1e280

https://gyazo.com/f32df01d072445257cb3cced0c5b0f95

Over a page of buyers at ~27-28

Going with 27-32, including a lower end to help account for the several lower sales