Histories with in-date sales:

https://backpack.tf/item/9075129796 (also 1 of the marketplace sellers)

Sale #1:

https://backpack.tf/profiles/76561198071178936#!/compare/1597276800/1597449600

https://backpack.tf/profiles/76561198091502579#!/compare/1597276800/1597449600

Untraceable...

https://backpack.tf/item/6801233260:

Sale #1:

https://backpack.tf/profiles/76561198305494036#!/compare/1592611200/1592697600

https://backpack.tf/profiles/76561198374206487#!/compare/1592611200/1592697600

Untraceable?

Sale #2:

https://backpack.tf/profiles/76561198374206487#!/compare/1596326400/1597881600

https://backpack.tf/profiles/76561198442349647#!/compare/1596240000/1596499200

Sold to a bot for 16k and some ref (below b.o)...

https://backpack.tf/item/6738491254 - several sales.

Sale #1:

https://backpack.tf/profiles/76561198881434725#!/compare/1589673600/1590019200

https://backpack.tf/profiles/76561198281457380#!/compare/1586649600/1590019200

Untraceable - cant find a sale between these owners...

Sale #2:

https://backpack.tf/profiles/76561198281457380#!/compare/1590019200/1590192000

https://backpack.tf/profiles/76561198202436474#!/compare/1590019200/1590105600

Untraceable, cant find how much it sold for...

Sale #3:

https://backpack.tf/profiles/76561198202436474#!/compare/1590105600/1590624000

https://backpack.tf/profiles/76561198305631653#!/compare/1589932800/1593043200

Untraceable, checked the histories of the "potential" items used for the trade, none of the histories match the owners...

Sale #4:

https://backpack.tf/profiles/76561198305631653#!/compare/1593043200/1597881600

https://backpack.tf/profiles/76561198186201090#!/compare/1593043200/1593302400

Untrace - the only item between the trade is a strange veterans attire...

Marketplace histories:

https://backpack.tf/item/6870842534 -> Plenty of sales.

Sale #1:

https://backpack.tf/profiles/76561198058356352#!/compare/1589932800/1590019200

https://backpack.tf/profiles/76561198397544073#!/compare/1589932800/1590019200

Sold for an aces high snaggletooth (7.75k) + aussie grenade launcher (b.o = 16k) - total = 23.75k (~24k)

Sale #2:

https://backpack.tf/profiles/76561198397544073#!/compare/1590019200/1590624000

https://backpack.tf/profiles/76561198799601783#!/compare/1589846400/1590019200

Untraceable...

Sale #3:

https://backpack.tf/profiles/76561198799601783#!/compare/1590019200/1590883200

https://backpack.tf/profiles/76561198135388328#!/compare/1590364800/1590451200

Sold to scrap bot with 2k but previous owner doesnt show the unusual being sold..

Sale #4:

https://backpack.tf/profiles/76561198135388328#!/compare/1590451200/1590537600

https://backpack.tf/profiles/76561198143214519#!/compare/1592438400/1596758400

Untraceable as to what it sold for - owner's bp not updated enough...

Sale #5:

https://backpack.tf/profiles/76561198143214519#!/compare/1592697600/1596758400

https://backpack.tf/profiles/76561198135388328#!/compare/1590796800/1590969600

Untraceable...

Sale #6:

https://backpack.tf/profiles/76561198135388328#!/compare/1591488000/1591574400

https://backpack.tf/profiles/76561198267189538#!/compare/1591401600/1591574400

Brought from bot - untraceable due to too many sales/items...

Sale #7:

https://backpack.tf/profiles/76561198267189538#!/compare/1592611200/1592697600

https://backpack.tf/profiles/76561198871163068#!/compare/1592524800/1592784000

Sold to bot for 15k + ~40ref (~16k - below b.o)

Sale #8:

https://backpack.tf/profiles/76561198871163068#!/compare/1592697600/1592870400

https://backpack.tf/profiles/76561198148669397#!/compare/1592265600/1592697600

Sold to albert for 24k - history of keys confirms this.

Sale #9:

https://backpack.tf/profiles/76561198148669397#!/compare/1592697600/1597881600

https://backpack.tf/profiles/76561198337734785#!/compare/1593216000/1593907200

Untraceable...

Sale #10:

https://backpack.tf/profiles/76561198337734785#!/compare/1593907200/1593993600

https://backpack.tf/profiles/76561199011396381#!/compare/1592524800/1593907200

Untraceable...

Sale #11:

https://backpack.tf/profiles/76561199011396381#!/compare/1594512000/1596067200

https://backpack.tf/profiles/76561198337734785#!/compare/1594512000/1595376000

Untraceable...

Sale #12:

https://backpack.tf/profiles/76561198337734785#!/compare/1597363200/1597449600

https://backpack.tf/profiles/76561198091502579#!/compare/1597449600/1597881600

Untraceable as to what it sold for...

Marketplace sales: https://marketplace.tf/items/tf2/30977;5;u29

July 5th @ 28 / 1.99 = 14.07k (below b.o)

August 9th @ 39.99 / 1.87 = 21.38k (~21k)

August 17th @ 32.48 / 1.79 = 18.14k (~18k)

Total, suitable sales:

23.75k (~24k)

24k

21k

18k

Suitable price range here would be 18-24k