Sale #1

https://marketplace.tf/items/tf2/30767;5;u8

Can't find history

Marketplace.tf sale on 2/14/25

$21.99 / $1.82 (median value at the time) = 12.1

Rounding to 12

Sale #2

https://marketplace.tf/items/tf2/30767;5;u8

Can't find history

Marketplace.tf sale on 3/06/25

$21.99 / $1.84 (median value at the time) = ~12.0

Rounding to 12

Sale #3

https://marketplace.tf/items/tf2/30767;5;u8

https://backpack.tf/item/14219126943

Marketplace.tf sale on 4/19/25

$21.99 / $1.90 (median value at the time) = 11.6

Rounding to 12

Sale #4

https://marketplace.tf/items/tf2/30767;5;u8

Can't find history

Marketplace.tf sale on 4/20/25

$21.99 / $1.90 (median value at the time) = 11.6

Rounding to 12

Sale #5

https://backpack.tf/item/15595262694

8 keys 16 ref

https://backpack.tf/profiles/76561198173677831#!/compare/1746057600/1746316800

Rounding to 8

Sale #6

https://backpack.tf/item/15567105173

9 keys 3.55 ref

Seller: https://backpack.tf/profiles/76561198073428292#!/compare/1742774400/1742860800 (ID: 15577919078)

Rounding to 9

Sale #7

https://backpack.tf/item/15567105173

10 keys

https://backpack.tf/profiles/76561199104457222#!/compare/1742947200/1743033600

Sale #8

https://backpack.tf/item/15432873275

Untraceable

https://backpack.tf/profiles/76561198346618954#!/compare/1740009600/1740096000

Sale #9

https://backpack.tf/item/15432873275

Untraceable

https://backpack.tf/profiles/76561199017959799#!/compare/1740268800/1740355200

Sale #10

https://backpack.tf/item/15432873275

Untraceable

https://backpack.tf/profiles/76561198858123940#!/compare/1740528000/1740614400

Sale #11

https://backpack.tf/item/15432873275

Untraceable

https://backpack.tf/profiles/76561198313426447#!/compare/1740614400/1740960000

Sale #12

https://backpack.tf/item/15432873275

Untraceable

https://backpack.tf/profiles/76561199017959799#!/compare/1740787200/1740873600

Sale #13

https://backpack.tf/item/14970450286

Bulk unusual sale

Seller: https://backpack.tf/profiles/76561198014230017#!/compare/1744243200/1744329600 (ID: 15627151204)

Sale #14

https://backpack.tf/item/14970450286

Untraceable

https://backpack.tf/profiles/76561199581722058#!/compare/1745452800/1745539200

Sale #15

https://backpack.tf/item/14265808593

Untraceable

https://backpack.tf/profiles/76561198070207687#!/compare/1741478400/1741737600

Sale #16

https://backpack.tf/item/14219126943

Untraceable

https://backpack.tf/profiles/76561199017959799#!/compare/1745884800/1745971200

Sale #17

https://backpack.tf/item/14219126943

5 keys 0.88 ref?

Seller: https://backpack.tf/profiles/76561198071082937#!/compare/1745884800/1745971200 (ID: 15689138773)

Rounding to 5

Sale #18

https://backpack.tf/item/14219126943

Bulk unusual sale

Seller: https://backpack.tf/profiles/76561199564942025#!/compare/1746057600/1746144000 (ID: 15696371284)

Sale #19

https://backpack.tf/item/11352746698

Untraceable

https://backpack.tf/profiles/76561199085308746#!/compare/1740009600/1740096000

Sale #20

https://backpack.tf/item/11352746698

Bulk unusual sale

Seller: https://backpack.tf/profiles/76561199026390261#!/compare/1740096000/1740182400 (ID: 15479226373)

Sale #21

https://backpack.tf/item/11352746698

5 keys again!?!?

Seller: https://backpack.tf/profiles/76561198850274253#!/compare/1741478400/1741564800 (ID: 15529486100)

Sale #22

https://backpack.tf/item/10985881832

Untraceable

https://backpack.tf/profiles/76561198058448496#!/compare/1741910400/1742428800

Sale #23

https://backpack.tf/item/10985881832

10 keys 18 ref

https://backpack.tf/profiles/76561198914135968#!/compare/1745971200/1746662400

Rounding to 10

Sale #24

https://backpack.tf/item/10632323042

Bulk sale

https://backpack.tf/profiles/76561199183541107#!/compare/1739059200/1739318400

Current sellers:

$24.74 on mannco.store

$24.75 on mannco.store (3x)

$39.90 on mannco.store

9 keys on bp.tf

10 keys on bp.tf (2x)

10.54 keys on bp.tf

13 keys on bp.tf

Sales: 12, 12, 12, 12, 8, 9, 10, 5, 5, 10

Not counting the 5 key sales, definitely missing info on them. Plugging rest in standard deviation calculator:

Mean: 10.63

Standard deviation: 1.50

8 and 9 key sales now falls out of range.

Final price: 10 - 12