Thank for Resugg help, Shuffle Pie

Excluding:

https://backpack.tf/item/8326144557

https://backpack.tf/item/8039980282

https://backpack.tf/profiles/76561198341171690#!/compare/1583107200/1583193600

https://backpack.tf/profiles/76561198093697152#!/compare/1571270400/1583539200 19 keys

https://backpack.tf/profiles/76561198090987063#!/compare/1588291200/1588377600

https://backpack.tf/profiles/76561198120672630#!/compare/1588291200/1588377600 unknown

https://backpack.tf/profiles/76561198120672630#!/compare/1588377600/1588464000

https://backpack.tf/profiles/76561198012537041#!/compare/1588377600/1588464000 unknown

https://backpack.tf/profiles/76561198124723591#!/compare/1588464000/1588550400

https://backpack.tf/profiles/76561198012537041#!/compare/1588464000/1588550400 bulk

https://bot.tf/stats/listings/4WXVXX2X quicksold for 14.5

https://backpack.tf/profiles/76561198124723591#!/compare/1588636800/1588723200

https://backpack.tf/profiles/76561198080179568#!/compare/1588550400/1588636800

https://backpack.tf/profiles/76561198080179568#!/compare/1590278400/1590364800 - Sold for 17 Keys

https://backpack.tf/profiles/76561197996992703#!/compare/1591401600/1591833600 - The Rocket was a tradeback, so exclude this sale

https://backpack.tf/profiles/76561198111664529#!/compare/1591056000/1591142400 - Miami Nights Bonk Helm (16 Keys)

https://backpack.tf/profiles/76561198283528306#!/compare/1591228800/1591315200 - Sold for an Australium Knife (~16.5 Keys)

https://backpack.tf/profiles/76561198112826532#!/compare/1591401600/1591488000 - Sold for 16 Keys

https://backpack.tf/profiles/76561198112826532#!/compare/1591488000/1591574400 - High here, low there

https://backpack.tf/profiles/76561198200906527#!/compare/1591228800/1591747200 - Sold + 4 Keys for ~21 Keys of Items

https://backpack.tf/profiles/76561198033378852#!/compare/1591747200/1591833600 - Better for the Sniper

https://imgur.com/a/ABkYUqD - Seller at 17 Keys and 18 Keys

https://backpack.tf/item/7427466331

https://backpack.tf/item/8039980282

Since 19 is now outdated, I'd go 16 - 17 Keys here.