Another unpriced.

Sales

Sale 1: Bulk

https://backpack.tf/profiles/76561198125791160#!/compare/1594684800/1594944000

https://backpack.tf/profiles/76561197961465738#!/compare/1591833600/1595635200

Sale 2: Untrace, looks like a backpack buy.

https://backpack.tf/profiles/76561198271936634#!/compare/1590451200/1590883200

https://backpack.tf/profiles/76561197994697258#!/compare/1590796800/1590883200

Sale 3: Bulky

https://backpack.tf/profiles/76561198869901325#!/compare/1592438400/1592611200

https://backpack.tf/profiles/76561198263801172#!/compare/1592179200/1592438400

Sale 4: Untrace

https://backpack.tf/profiles/76561198071761678#!/compare/1582156800/1592697600

https://backpack.tf/profiles/76561198040186479#!/compare/1592611200/1592784000

I assume this is one of the marketplace sales below.

Sale 5: Untrace

https://backpack.tf/profiles/76561198307215279#!/compare/1597622400/1597795200

https://backpack.tf/profiles/76561198454615761#!/compare/1597708800/1597795200

Other exchanges, such as tradebacks, mannco, scrap, qs store swapping and etc.

https://backpack.tf/item/7550502206

https://backpack.tf/item/3948118649

https://backpack.tf/item/3702349143

https://backpack.tf/item/5918114562

https://backpack.tf/item/2702826053

Marketplace

https://marketplace.tf/items/tf2/1107;5;u3026

June

$20 on June 3 (20/1.96 = 10~)

https://manic.tf/keyprice/?at=2020-06-03

https://backpack.tf/item/8157331592

Listings during the time: https://bot.tf/stats/listings/Y9QV72R0

July

$15 on July 13 (15/1.92 = 8~)

https://manic.tf/keyprice/?at=2020-07-13

Listings during the time: https://bot.tf/stats/listings/M0OJ3EQV

August

$15.17 on August 11 (15.17/1.84 = 8~)

https://manic.tf/keyprice/?at=2020-08-11

Listings during the time: https://bot.tf/stats/listings/Y8081NK9

$20 on August 20 (20/1.79 = 11~)

https://manic.tf/keyprice/?at=2020-08-20

https://backpack.tf/item/3798929766

Buyout was 10 keys

Listings during the time: https://bot.tf/stats/listings/Y79VZ5V8

$8 on August 22 (8/1.81 = 4.4~)

https://manic.tf/keyprice/?at=2020-08-22

Classifieds

https://gyazo.com/fec6686597b0db47c862439cec527c21

Buyers are up to 6.9~.

Summary

Sales at 4.4, 8, 8, 10, and 10.

Conclusion

Excluding 4.4 as it's under buyers.

Going with 8-10 here.