A nigh impossible proposition

https://backpack.tf/item/1777956094 - Duped

Sale 1) Sold for $238.46 (low)

https://marketplace.tf/items/tf2/339;5;u62

https://backpack.tf/item/2900854071

Sale 2) Sold for a Death at Dusk Winter Woodsman + Duped Circling Peace Sign Exquisite Rack (74 Keys) + SBTWC Metal Slug (~45 Keys)

https://backpack.tf/profiles/76561198232041512#!/compare/1559952000/1560038400

https://imgur.com/a/h65uXOa - Should cap at the Buyout of 220 Keys

Woodsman Mini

https://backpack.tf/profiles/76561198125791160#!/compare/1560643200/1560729600 - Sold for a Stormy 13th Noble

https://imgur.com/a/9cieISU - Had a buyout of 180 Keys, but there was another seller at 120 Keys (currently on Marketplace for ~$260)

No good mini, but this should be over 100 Keys.

Rack Mini

https://backpack.tf/profiles/76561198232041512#!/compare/1563062400/1563148800 - Bulk for a Duped Knifestorm Le Party Phantom

https://backpack.tf/profiles/76561198804015732#!/compare/1563926400/1564012800 - Sold for 68 Keys (45 were used for the Bonk)

https://backpack.tf/suggestion/5d42401c6780721861188b67 - Bonk suggestion

https://backpack.tf/profiles/76561198160856661#!/compare/1564185600/1564272000 - Sold for 80 Keys

Slug Mini

https://backpack.tf/profiles/76561198232041512#!/compare/1562544000/1562630400 - Sold for 51 Keys

https://backpack.tf/profiles/76561198061325446#!/compare/1562630400/1563408000 - ?

https://backpack.tf/profiles/76561198001812215#!/compare/1562803200/1562889600 - Quicksold for 40 Keys

The person who paid 51 immediately sold to a quickbuyer, so the slug should end up somewhere between 40 and 51 Keys.

Sale 3) Bulk sale for a Darkblaze Backwards Ballcap

https://backpack.tf/profiles/76561198025970990#!/compare/1560124800/1560384000

Sale 4) Sold for 160 Keys + Green Energy Tyrant's Helm (56 Keys)

https://backpack.tf/profiles/76561198064982470#!/compare/1564099200/1564272000

https://backpack.tf/profiles/76561198007953976#!/compare/1564185600/1564272000

160 + 56 = 216, which I'll round to 215 Keys

Tyrant's Mini

https://backpack.tf/profiles/76561198089689746#!/compare/1562976000/1563148800 - Sold for a Sunbeams Burning Question (65.5 Keys) + 4 Keys

https://backpack.tf/profiles/76561198143761806#!/compare/1563062400/1563148800 - Buyer's side of the Burning Question sale

https://backpack.tf/profiles/76561197996095002#!/compare/1563062400/1563148800 - The Burning Question sold for the Scopers/Keys from the first link

https://backpack.tf/profiles/76561198013633449#!/compare/1561939200/1562025600 - Sold for 55 Keys + 29 Refined (rounds to 56 Keys)

https://backpack.tf/profiles/76561198232041512#!/compare/1562284800/1562457600 - Sold + 8 Keys for a Duped GE Kabuto

https://backpack.tf/profiles/76561198118235963#!/compare/1562976000/1563148800 - Sold + 11 Keys for a Circling TF Logo Crone's Dome (66.5 Keys)

The Kabuto has no Mini. Rounding 55.5 from the Crone's sale to 56 Keys.

https://imgur.com/a/fUplNtB - Calling 69.5 Keys high because of these current Sellers.

https://backpack.tf/item/6810578105

https://backpack.tf/item/3343987894

https://backpack.tf/item/271209353

https://backpack.tf/item/1598557809

Sunbeams Burning Question Micro

https://marketplace.tf/items/tf2/30987;5;u17 - Sold for $130 when Keys were ~$1.82 each and $111.11 when Keys were ~$1.84 each

https://marketplace.tf/items/tf2/5021;6

130 / 1.82 = 71.42, which rounds to 71 Keys

111.11 / 1.84 = 60.38, which rounds to 60 Keys

Circling TF Logo Crone's Dome Micro

https://backpack.tf/profiles/76561198068732040#!/compare/1559001600/1559088000 - Sold for a Tesla Coil Gibus (65.5 Keys)

https://backpack.tf/profiles/76561198351621971#!/compare/1558742400/1559779200 - This is somewhere around 65, but is a nasty sale

https://backpack.tf/item/2203599599

Sale 5) ?

https://backpack.tf/profiles/76561198332723633#!/compare/1557878400/1557964800