Team 8 reporting for duty. Suggestion #1.

SALE 1

Sold for 26 keys

https://backpack.tf/profiles/76561198053832327#!/compare/1563753600/1563840000

https://backpack.tf/profiles/76561198098357074#!/compare/1563753600/1563926400

SALE 2

MARKETPLACE

Sold for 50.12 on july 28

https://marketplace.tf/items/tf2/30686;5;u102

$50.12 / $1.8 = 27.09 rounding to 27 keys

SALE 3

Unknown

https://backpack.tf/profiles/76561198097670667#!/compare/1560902400/1560988800

https://backpack.tf/profiles/76561198006533889#!/compare/1560470400/1562803200

SALE 4

Sold for 32 keys

https://backpack.tf/profiles/76561198335791307#!/compare/1559779200/1559865600

https://backpack.tf/profiles/76561198104037014#!/compare/1559779200/1559865600

This sale was dumped immediately after to another known quickbuyer - SALE 5

SALE 5

Sold for an unknown amount, to a known quickbuyer

https://backpack.tf/profiles/76561198104037014#!/compare/1559865600/1559952000

https://backpack.tf/profiles/76561198337734785#!/compare/1559865600/1560038400

SALE 6

Not sure.

https://backpack.tf/profiles/76561198337734785#!/compare/1559952000/1560038400

https://backpack.tf/profiles/76561198158206236#!/compare/1559952000/1560038400

B/o was 25 keys

https://bot.tf/stats/listings/Y3RPWPRM

CLASSIFIEDS

https://gyazo.com/6ee61533896ae510ae4b71592e285032

Sales at 26. Marketplace sale at 27. Taking 26-27 keys.