Here I stand helpless and left for dead.

https://backpack.tf/item/1458991565

Sale 1) Sold for a Smoking Antarctic Eyewear (14 Keys)

https://backpack.tf/profiles/76561198164514611#!/compare/1561852800/1561939200

Eyewear Mini

https://backpack.tf/profiles/76561198258264645#!/compare/1560297600/1560384000 - Sold for a Smoking Thirst Blood (15 Keys)

https://imgur.com/a/HyGySKh - Thirst Blood sale is capped by the Buyout of 14 Keys

https://backpack.tf/profiles/76561198841279602#!/compare/1560988800/1561075200 - Sold for 14 Keys

https://backpack.tf/profiles/76561198215739808#!/compare/1559865600/1559952000 - Sold for 15 Keys

https://marketplace.tf/items/tf2/30977;5;u35 - Sold for $25.83 (14 Keys), $26.1 (14 Keys), $24 (13 Keys), and $26 (14 Keys)

Sale 2) ?

https://backpack.tf/profiles/76561198337734785#!/compare/1563148800/1563235200

https://backpack.tf/profiles/76561198820198517#!/compare/1562889600/1563494400

Sale 3) Bulk sale for a Circling Peace Sign Antarctic Eyewear + 4 Keys

https://backpack.tf/profiles/76561198820198517#!/compare/1563494400/1563667200

Sale 4) ?

https://backpack.tf/profiles/76561198302655841#!/compare/1563667200/1563753600

https://backpack.tf/profiles/76561198059749524#!/compare/1563667200/1563753600

Sale 5) ?

https://backpack.tf/profiles/76561198059749524#!/compare/1564358400/1564704000

https://backpack.tf/profiles/76561198065400580#!/compare/1564531200/1564704000

Sale 6) Bulk sale for a Purple Confetti Bedouin Bandana + ~2 Keys of Items + 1 Key

https://backpack.tf/profiles/76561198065400580#!/compare/1565395200/1565568000

https://backpack.tf/item/4814784057

Sale 7) Sold for 12 Keys + 22.22 Refined

https://backpack.tf/profiles/76561198002757046#!/compare/1562371200/1562457600

https://backpack.tf/profiles/76561198820198517#!/compare/1562457600/1562544000

The Handcraft first sold for 10 Keys + 12 Refined, which sold to R+ubi with the 12 Keys + 10.22 Refined below it in the first link.

Rounds to 12 Keys

Sale 8) Sold for a Kill-a-Watt Archer's Sterling (12.5 Keys)

https://backpack.tf/profiles/76561198820198517#!/compare/1562544000/1562630400

Rounds to 13 Keys

Sterling Mini

https://backpack.tf/profiles/76561198132275164#!/compare/1559779200/1559952000 - Sold + 2 Keys + ~1 Key of Refined for a Searing Rubber Glove

https://backpack.tf/profiles/76561198267589362#!/compare/1559779200/1559865600 - Quicksold for 10 Keys + 36.11 Refined

https://backpack.tf/profiles/76561198434799370#!/compare/1559260800/1559347200 - Sold for 12 Keys

https://marketplace.tf/items/tf2/30874;5;u56 - Sold for $23.99 when Keys were ~$1.84 each and $21.99 when Keys were ~$1.81 each

23.99 / 1.84 = 13.04, which rounds to 13 Keys

21.99 / 1.81 = 12.15, which rounds to 12 Keys

The Glove sale will end up below the quicksale price, so I'll take 12 - 13 Keys for the Archer's.

Sale 9) Sold + 1 Key for a Steaming Scotsman's Stove Pipe + Spectral Swirl Spent Well Spirits

https://backpack.tf/profiles/76561198296034898#!/compare/1565136000/1565222400

There's no good mini for the Stove Pipe, but this sale is probably high anyway.

https://imgur.com/a/tGEC5C6 - Young Seller at 16 Keys, 27 Day/4 Month/Young/1 Year Sellers at 17 Keys