Item #1: https://backpack.tf/item/12828616212

Sale 1

(3/22-25) https://backpack.tf/profiles/76561199199711319#!/compare/1679443200/1679702400 - untraceable

Sale 2 

(7/18) https://marketplace.tf/items/tf2/31242;5;u219 - $131.99 

$131.99 / ($1.95 per key * 90%) = ~75 keys

Buyout was ~70 keys up until 7/17: https://imgur.com/a/T3hKe7w

(Sold on MPTF in 1 day, kinda sus but idk)

Item #2: https://backpack.tf/item/13078462824

Sale 3

(5/26-27) https://backpack.tf/profiles/76561199104559253#!/compare/1685059200/1685145600 - 28 keys?

Unusable due to v̶e̶r̶y̶ ̶l̶o̶w̶ ̶s̶a̶l̶e̶ unable to determine actual trade content (28 keys or 5 low-tier unusuals, all of which are untraceable)

Sale 4 

(7/01-02) https://backpack.tf/profiles/76561198041967251#!/compare/1686441600/1688169600 - 39 keys 19 refined 

Quicksell/dumped to bot

Earliest known buyout was at ~65 keys on 6/23 before being dumped: https://imgur.com/a/H58hpVt

Item #3: https://backpack.tf/item/11806747101

Sale 5 / Sale 6

Both sales were in and out of STN (27 keys 27 ref ~ 39 keys 32.66 ref as of 7/25), one of them untraceable, likely unusable anyway

Sale 7

(7/25-27) https://backpack.tf/profiles/76561198007486115#!/compare/1690243200/1690416000

Quicksold for 49 keys (Bot b/o as of 7/26: https://imgur.com/a/ND6giMF)

Sale 8

Untraceable, dumped to bot

Item #4: https://backpack.tf/item/13299612189

Just showed up, no idea (probably came from a bulk trade for a Treasure Trove Brothers in Blues)

Item #5: https://backpack.tf/item/11019019596

Just showed up as well, untraceable

27, 28?, 39, 39, 49, (65), (70), 75

Sister effect (Holiday Horns) priced at 68 keys ~3 months ago

Taking 55-65 keys