Item 1

https://backpack.tf/item/12712369750

Sale 1

https://backpack.tf/profiles/76561198259893749#!/compare/1681516800/1681776000

https://backpack.tf/profiles/76561198261483133#!/compare/1681603200/1681689600

Bulk for a Pumpkin Moon Hat Outta Hell

Sale 2

https://backpack.tf/profiles/76561198261483133#!/compare/1681603200/1681689600

https://backpack.tf/profiles/76561198087612533#!/compare/1681257600/1681776000

Pumpkin Moon Beanie The All-Gnawing + Dead Presidents Merc's Mohawk + Green Confetti Executioner + ~.5 keys in adds

Mini for the Pumpkin Moon Beanie The All-Gnawing 53.5 keys

Mini for the Dead Presidents Merc's Mohawk 17 keys

Mini for the Green Confetti Executioner 16 keys

53.5 + 17 + 16 + .5 = ~87 keys (doesn't cap)

https://gladiator.tf/time-machine?item=Eldritch%20Flame%20Prehistoric%20Pullover&at=2023-04-17T13:20:45.000Z

Sale 3

https://backpack.tf/profiles/76561198087612533#!/compare/1684713600/1684800000

https://backpack.tf/profiles/76561198041894616#!/compare/1683763200/1684800000

1 for 1 with a Sunbeams Merc's Mohawk

Item 2

https://backpack.tf/item/12140648523

Sale 4

https://backpack.tf/profiles/76561199219758482#!/compare/1680825600/1680912000

https://backpack.tf/profiles/76561198412759781#!/compare/1680566400/1681344000

No clue

Sale 5

https://backpack.tf/profiles/76561198412759781#!/compare/1681862400/1682121600

https://backpack.tf/profiles/76561198299107197#!/compare/1682380800/1682899200

Probably 78 keys

Item 3

https://backpack.tf/item/10303065142

Covering mp.tf at the end

Item 4

https://backpack.tf/item/9047623122

Sale 6

https://backpack.tf/profiles/76561198133606132#!/compare/1682812800/1682899200

https://backpack.tf/profiles/76561199085116273#!/compare/1682726400/1682812800

Keys don't match

Sale 7

https://backpack.tf/profiles/76561199085116273#!/compare/1683158400/1683244800

https://backpack.tf/profiles/76561199099521803#!/compare/1683244800/1683331200

No clue

Sale 8

https://backpack.tf/profiles/76561199099521803#!/compare/1683331200/1683417600

https://backpack.tf/profiles/76561199139394142#!/compare/1683331200/1683417600

Probably gambling

Sale 9

https://backpack.tf/profiles/76561199139394142#!/compare/1683417600/1683504000

https://backpack.tf/profiles/76561198453530349#!/compare/1683417600/1683504000

No clue

Item 5

https://backpack.tf/item/8823026251

Sale 10

https://backpack.tf/profiles/76561199085116273#!/compare/1679270400/1679356800

https://backpack.tf/profiles/76561198118868022#!/compare/1679184000/1679356800

No clue

Item 6

https://backpack.tf/item/7039016905

Sale 11

Covering mp.tf at the end

Sale 12

https://backpack.tf/profiles/76561198835163155#!/compare/1681344000/1681603200

https://backpack.tf/profiles/76561198453530349#!/compare/1681257600/1681344000

Can only match 2 keys

Ignoring the buy into re-dump...

Item 7

https://backpack.tf/item/4264178068

Sale 13

https://backpack.tf/profiles/76561199110809353#!/compare/1680566400/1680652800

https://backpack.tf/profiles/76561198038666068#!/compare/1680566400/1680652800

No clue

Sale 14

https://backpack.tf/profiles/76561198038666068#!/compare/1680739200/1680998400

https://backpack.tf/profiles/76561198355255906#!/compare/1656201600/1681689600

No clue

Mp.tf

https://marketplace.tf/items/tf2/30704;5;u106

$150.00 / $2.10 = ~71 keys (Apr 7)

$159.99 / $2.09 = ~77 keys (Apr 9)

$164.99 / $2.04 = ~81 keys (May 6)

Total Sales

71, 77, 78, 81, 87

https://gladiator.tf/time-machine?item=Eldritch%20Flame%20Prehistoric%20Pullover&at=2023-05-28T11:52:58.150Z

Honestly, 71 - 87 keys looks good here c: