Item 1: https://backpack.tf/item/15868783083

Sale 1: Bulk

https://backpack.tf/profiles/76561198050518375#!/compare/1755993600/1756166400

https://backpack.tf/profiles/76561199235704407#!/compare/1756080000/1756166400

Sale 2: Presumably the marketplace sale listed below

Item 2: https://backpack.tf/item/8722395058

Sale 1: Untrace

https://backpack.tf/profiles/76561198453530349#!/compare/1759190400/1759276800

https://backpack.tf/profiles/76561198074946606#!/compare/1759190400/1759276800

Sale 2: Untrace

https://backpack.tf/profiles/76561198074946606#!/compare/1759276800/1759363200

https://backpack.tf/profiles/76561198139627699#!/compare/1759276800/1759363200

Sale 3: Bulk

https://backpack.tf/profiles/76561198139627699#!/compare/1759536000/1759622400

https://backpack.tf/profiles/76561198070774923#!/compare/1759536000/1759622400

Sale 4: Bot dumped for 14 keys

https://backpack.tf/profiles/76561198070774923#!/compare/1759881600/1759795200

https://backpack.tf/profiles/76561199100906514#!/compare/1759795200/1759881600

Sale 5: Untrace, doesn't seem to be part of the larger deal

https://backpack.tf/profiles/76561199100906514#!/compare/1759968000/1760054400

https://backpack.tf/profiles/76561199193412191#!/compare/1759968000/1760054400

Marketplace sales:

https://marketplace.tf/items/tf2/30977;5;u6

Sold for $32.99 on Oct 26th

https://marketplace.tf/items/tf2/5021;6

Key price for the day is $1.84

$32.99 / $1.84 = 17.93k

Classifieds link: https://imgur.com/a/5Cb51kM

Only one sale at 17.93k, bot dump is below buyers as well. Sellers at 22k and buyers at 14.5k~ don't invalidate the single marketplace sale, so taking 17.93k rounded up to 18k for the sole value.