This is suggestion is a good example of the sund cost fallacy, I spent 20 minutes and was like, I can't just let that time go to waste, so I spent another hour + on it ;(

Item 1 https://backpack.tf/item/3902387722

Sale 1

https://backpack.tf/profiles/76561198018341857#!/compare/1687564800/1687651200

https://backpack.tf/profiles/76561199407476980#!/compare/1687737600/1687737600

Deposit onto Skinport

Item 2 https://backpack.tf/item/3903720382

Sale 2

https://backpack.tf/profiles/76561198342161127#!/compare/1686614400/1686700800

https://backpack.tf/profiles/76561199246725367#!/compare/1686614400/1686700800

Super low, Seems like it's missing something

Item 3 https://backpack.tf/item/3903173254

Sale 3

https://backpack.tf/profiles/76561198301015840#!/compare/1687219200/1689379200

https://backpack.tf/profiles/76561198118580639#!/compare/1687910400/1688083200

Smoking Master's Yellow Belt + Burning Flames Classy Capper, exluding because I already have a range, so it wouldn't change anything

Item 4 https://backpack.tf/item/3903385088

Sale 4

https://backpack.tf/profiles/76561199202000000#!/compare/1686614400/1686700800

https://backpack.tf/profiles/76561199069442401#!/compare/1686614400/1686787200

Bot to owner

Item 5 https://backpack.tf/item/3901775131

Sale 5

https://backpack.tf/profiles/76561198361057294#!/compare/1688860800/1691539200

https://backpack.tf/profiles/76561197984528025#!/compare/1691193600/1691539200

Probably a sale on mannco.store

Marketplace.tf sales

Item 6 https://backpack.tf/item/3902373344

Sale 6

https://marketplace.tf/items/tf2/727;6;kt-2

Sold on May 17th 2023 for $450 / 2.02 = 222.77 --> round to 225 keys

Item 7 https://backpack.tf/item/3901437038

Sale 7 (probably on this item, either that or sale 8 is on this one, doesn't really matter though)

https://marketplace.tf/items/tf2/727;6;kt-3

Sold on August 1st 2023 for $599.99 / 1.95 = 307.69 --> round to 310 keys

Sale 8

https://marketplace.tf/items/tf2/727;6;kt-3

Sold on August 11th 2023 for $599.99 / 2 = 299.995 --> round to 300 keys

Various SCM sales

Basic Killstreak

https://steamcommunity.com/market/listings/440/Killstreak%20Black%20Rose

Sale 9

May 17th, 492.57 / 2.03 = 242.65 --> round to 245keys

Sale 10

July 9th, 325.34 / 1.87 = 173.98 --> round to 175 keys

Spec Killstreak

https://steamcommunity.com/market/listings/440/Specialized%20Killstreak%20Black%20Rose

Sale 11

May 16th, 263.17 / 2.02 = 130.28 --> round to 130 keys

Sale 12

May 22nd, 373.45 / 2.04 = 183.06 --> round to 185 keys

Prof Killstreak

https://steamcommunity.com/market/listings/440/Professional%20Killstreak%20Black%20Rose

Sale 13

May 18th, 272.51 / 2.03 = 134.24 --> round to 135 keys

Sale 14

June 1st, 325.22 / 2.02 = 161 --> round to 160 keys

Sale 15

June 16th, 512.95 / 2.07 = 247.8 --> round to 250 keys

Sale 16

June 22nd, 539.91 / 2.04 = 264.66 --> round to 265 keys

Sale 17

July 11th, 325.29 / 1.89 = 172.11 --> round to 170 keys

Sale 18

25th July, 496.32 / 2.01 = 246.93 --> round to 245 keys

Sale 19

July 31st, 540.68 / 2 = 270.34 --> round to 270 keys

...And now every sale by price descending and whether or not we're using it

- 310 = unsold at ~250 for 4 months, too high

- 300 = ^

- 270 = ^

- 265 = ^

- 250 = ^

- 245 = ^

- 225 = using it

- 185 = using it

- 175 = using it

- 170 = not using, below buyers

- 160 = ^

- 135 = ^

- 130 = ^

Capping at 240 due to unsolds. Not going below buyers, so 175 - 240

EDIT: Typo