Item 1

https://backpack.tf/item/10682430674

Sale #1

Untraceable-

Seller: https://backpack.tf/profiles/76561199245733895#!/compare/1684627200/1684713600

Buyer: https://backpack.tf/profiles/76561199199136084#!/compare/1684627200/1684713600

Sale #2

Untraceable, most likely sold for 31 keys-

Seller: https://backpack.tf/profiles/76561198850274253#!/compare/1692316800/1692403200

Buyer: https://backpack.tf/profiles/76561198850100960#!/compare/1691625600/1692403200

Item 2

https://backpack.tf/item/9278336866

Sale #3

Untraceable-

Seller: https://backpack.tf/profiles/76561198050518375#!/compare/1685491200/1685577600

Buyer: https://backpack.tf/profiles/76561198058776834#!/compare/1685404800/1686009600

Sale #4

Untraceable, ID for the unusual matches the one key and metal bulk but clearly this is incomplete-

Seller: https://backpack.tf/profiles/76561198058776834#!/compare/1686096000/1686614400

Buyer: https://backpack.tf/profiles/76561199197624825#!/compare/1686441600/1686528000

Sale #5

Bulk transfer-

Seller: https://backpack.tf/profiles/76561199197624825#!/compare/1686787200/1692057600

Buyer: https://backpack.tf/profiles/76561197963500354#!/compare/1686700800/1686787200

Sale #6

Sold for a Vivid Plasma Tipped Lid (35 keys) + 4 keys = 39 keys-

Seller: https://backpack.tf/profiles/76561197963500354#!/compare/1688428800/1688601600

Buyer: https://backpack.tf/profiles/76561198346080922#!/compare/1688342400/1688688000

Sale #7

Untraceable-

Seller: https://backpack.tf/profiles/76561198346080922#!/compare/1690588800/1690848000

Buyer: https://backpack.tf/profiles/76561199183545721#!/compare/1690588800/1690761600

Item 3

https://backpack.tf/item/7827678871

Sale #8

Untraceable, Maybe sold for 32 keys + 35 refined-

Seller: https://backpack.tf/profiles/76561198337734785#!/compare/1685923200/1686009600

Buyer: https://backpack.tf/profiles/76561198162073847#!/compare/1685318400/1686268800

Item 4

https://backpack.tf/item/7496523124

Sale #9

Bulk sale-

Seller: https://backpack.tf/profiles/76561198395846608#!/compare/1687478400/1687564800

Buyer: https://backpack.tf/profiles/76561198057412106#!/compare/1687392000/1687478400

Sale #10

Sold for 27 keys-

Seller: https://backpack.tf/profiles/76561198057412106#!/compare/1687478400/1687564800

Buyer: https://backpack.tf/profiles/76561199244599385#!/compare/1687478400/1687564800

Sale #11

Sold for a Viridescent Peeper Elf Care Provider (using this sale to price the Elf Care)-

Seller: https://backpack.tf/profiles/76561199244599385#!/compare/1687651200/1687737600

Buyer: https://backpack.tf/profiles/76561198415819531#!/compare/1687478400/1687737600

Sale #12

Untraceable-

Seller: https://backpack.tf/profiles/76561198415819531#!/compare/1687996800/1688256000

Buyer: https://backpack.tf/profiles/76561198066684198#!/compare/1687910400/1688428800

Sale #13

Untraceable-

Seller: https://backpack.tf/profiles/76561198066684198#!/compare/1688428800/1688688000

Buyer: https://backpack.tf/profiles/76561198209389815#!/compare/1678233600/1690416000

Sale #14

Bulk transfer?-

Seller: https://backpack.tf/profiles/76561198209389815#!/compare/1690416000/1691452800

Buyer: https://backpack.tf/profiles/76561197966756586#!/compare/1692057600/1692144000

Item 5

https://backpack.tf/item/6311032387

Sale #15

Untraceable-

Seller: https://backpack.tf/profiles/76561198311498888#!/compare/1684627200/1684886400

Buyer: https://backpack.tf/profiles/76561198880696674#!/compare/1684108800/1685577600

Sale #16

Untraceable-

Seller: https://backpack.tf/profiles/76561198880696674#!/compare/1686873600/1687737600

Buyer: https://backpack.tf/profiles/76561199110809353#!/compare/1688947200/1689033600

Sale #17

Untraceable-

Seller: https://backpack.tf/profiles/76561199110809353#!/compare/1689120000/1689292800

Buyer: https://backpack.tf/profiles/76561199026390261#!/compare/1689033600/1689120000

Sale #18

Sold for 30 keys + 0.11 refined (ID "13292721388" of the unusual matches)-

Seller: https://backpack.tf/profiles/76561199026390261#!/compare/1690156800/1690243200

Buyer: https://backpack.tf/profiles/76561198247814120#!/compare/1688688000/1690934400

Item 6

https://backpack.tf/item/4455720952

Sale #19

Bulk transfer-

Seller: https://backpack.tf/profiles/76561199336023168#!/compare/1687392000/1688515200

Buyer: https://backpack.tf/profiles/76561198050376470#!/compare/1679443200/1690934400

Item 7

https://backpack.tf/item/4193741110

Sale #20

Untraceable?-

Seller: https://backpack.tf/profiles/76561199127652476#!/compare/1685232000/1685318400

Buyer: https://backpack.tf/profiles/76561199101508611#!/compare/1685232000/1685318400

Sale #21

Sold for 35 keys (ID "13130703206" of the unusual matches)-

Seller: https://backpack.tf/profiles/76561199101508611#!/compare/1686268800/1686355200

Buyer: https://backpack.tf/profiles/76561198388976275#!/compare/1686182400/1686873600

Marketplace.tf Sales

https://marketplace.tf/items/tf2/30658;5;u91

MP.TF Sale #1

Sold for $64.95 on June 11, 2023

Key Price Average @ $1.98ish

64.95/1.98 = 32.80ish keys

MP.TF Sale #2

Sold for $64.95 on June 24, 2023

Key Price Average @ $1.99ish

64.95/1.99 = 32.63ish keys

MP.TF Sale #3

Sold for $64.95 on June 28, 2023

Key Price Average @ $2ish

64.95/2 = 32.47ish keys

MP.TF Sale #4

Sold for $64.95 on June 29, 2023

Key Price Average @ $2ish

64.95/2 = 32.47ish keys

MP.TF Sale #5

Sold for $64.95 on July 20, 2023

Key Price Average @ $1.96ish

64.95/1.96 = 33.13ish keys

MP.TF Sale #6-7

Sold for $61.99 on August 2, 2023

Key Price Average @ $1.95

61.99/1.95 = 31.78ish keys

MP.TF Sale #8

Sold for $61.99 on August 6, 2023

Key Price Average @ $1.96ish

61.99/1.96 = 31.62ish keys

MP.TF Sale #9

Sold for $74.99 on August 18, 2023

Key Price Average @ $2.03ish

74.99/2.03 = 36.94ish keys

Sales @ 27, 30, 32, 32, 32, 32, 32, 33, 33, 33, 35, 37, 39

Taking 27-35 here