Yeah sure I'll help since this is your first suggestion

Item 1: https://backpack.tf/item/7139034047

Listed on Marketplace.tf

Item 2: https://backpack.tf/item/6754854338

Sales 1 and 2 aren't usable since the person involved was trade banned, which most likely meant they were a scammer

Sale 3:

https://backpack.tf/profiles/76561199581722058#!/compare/1767225600/1767312000

https://backpack.tf/profiles/76561198977562505#!/compare/1767312000/1767744000

Possibly sold for the Haunted Ghosts Brotherhood of Arms, it's STN however so if it was really the sale it would have most likely been valued at around buy order price

Sale 4:

Mannco.Store, not usable

Sale 5:

https://backpack.tf/profiles/76561198226525604#!/compare/1772150400/1772236800

https://backpack.tf/profiles/76561199564942025#!/compare/1772064000/1772150400

Dumped to STN, 34.33 ref matches

Sale 6:

https://backpack.tf/profiles/76561199564942025#!/compare/1772236800/1772323200

https://backpack.tf/profiles/76561198868457283#!/compare/1772236800/1772323200

Looks like it sold for the Scorching Flames Human Cannonball, Elemental Time Out Therapy, Strange Professional Killstreak Australium Wrench, Strange Professional Killstreak Australium Frontier Justice and Strange Festivized Specialized Killstreak Australium SMG

For the Australiums we can use Gladiator.tf stats (I'll tell you how they work if you need me to :) )

The Human Cannonball and Time Out Therapy will need price updates, but once again buyers might be enough given that STN most likely valued them at about that

Item 3: https://backpack.tf/item/7926315267

Sale 7:

https://backpack.tf/profiles/76561198381349398#!/compare/1768780800/1770940800

https://backpack.tf/profiles/76561198281932740#!/compare/1770854400/1770940800

Sold for the Green Energy Bear Necessities, Split Malice Buy a Life and Molten Mallard Firewall Helmet

The Bear Necessities and Firewall Helmet will need minis (price updates) since they have outdated values

Sale 8:

https://backpack.tf/profiles/76561198281932740#!/compare/1771027200/1771113600

https://backpack.tf/profiles/76561199026390261#!/compare/1771027200/1771113600

Dumped to STN for 125 and 24.44 ref (~125 keys)

Sale 9:

https://backpack.tf/profiles/76561199026390261#!/compare/1771804800/1771891200

https://backpack.tf/profiles/76561198330635661#!/compare/1771804800/1771891200

~130 keys

Sale 10:

https://backpack.tf/profiles/76561198330635661#!/compare/1772323200/1772841600

https://backpack.tf/profiles/76561198791280421#!/compare/1772755200/1772841600

Your sale at 140 keys https://imgur.com/a/Zr0y6s8

Item 4: https://backpack.tf/item/7584997183

Sale 11:

https://backpack.tf/profiles/76561198122085087#!/compare/1770508800/1770595200

https://backpack.tf/profiles/76561198106511423#!/compare/1770508800/1770595200

Sold alongside the Cloud 9 Tyrant's Helm and double spelled Bill's Hat for the Ether Trail Prehistoric Pullover. This sale is better to use on the Prehistoric Pullover

Sale 12:

https://backpack.tf/profiles/76561198106511423#!/compare/1770595200/1770681600

https://backpack.tf/profiles/76561198060733816#!/compare/1770681600/1772928000

127 keys

Item 5: https://backpack.tf/item/8671137400

Sale 13:

https://backpack.tf/profiles/76561199090168179#!/compare/1766448000/1766620800

https://backpack.tf/profiles/76561198083328505#!/compare/1766620800/1766707200

Sold for 10 keys and the Disco Beat Down Whirly Warrior

The Whirly Warrior will need a price update too

~~

The best option would be to have a look at updating the hats involved, but in any case a range will be needed