Keys recently accepted at 69.11 ref: https://backpack.tf/suggestion/6618d32cf68d9261c801ced2

Past month key sales (PayPal only):

https://forums.backpack.tf/topic/82445-%F0%9D%90%81%F0%9D%90%AE%F0%9D%90%B2%F0%9D%90%A2%F0%9D%90%A7%F0%9D%90%A0-%F0%9D%90%A4%F0%9D%90%9E%F0%9D%90%B2%F0%9D%90%AC-%F0%9D%90%9F%F0%9D%90%A8%F0%9D%90%AB-%F0%9D%9F%8F45-%F0%9D%90%AD%F0%9D%90%A1%F0%9D%90%AB%F0%9D%90%A8%F0%9D%90%AE%F0%9D%90%A0%F0%9D%90%A1-%F0%9D%90%8F%F0%9D%90%9A%F0%9D%90%B2%F0%9D%90%8F%F0%9D%90%9A%F0%9D%90%A5-100-trust-ratings%E2%9C%85/

https://backpack.tf/trust/76561198006544512

400 keys at $1.45

$1.45 / 69.11 = $0.021

https://forums.backpack.tf/topic/76871-buying-keys-143-each-buying-backpacks-ref-tools-all-items-paypal-250-trust/

https://backpack.tf/trust/76561198031258757

94 keys at $1.43

$1.43 / 69.11 = $0.021

https://forums.backpack.tf/topic/78488-%F0%9F%97%9D%EF%B8%8Fbuying-keys-for-15-paypal-142-for-crypto-and-tods-for-06-%E2%9C%85-100-trust/

https://backpack.tf/trust/76561198306145097

610 keys at $1.5

$1.5 / 69.11 = $0.022

https://forums.backpack.tf/topic/80968-%F0%9F%A6%8A-buying-backpacks-and-keys-145-with-paypal-zelle-cash-app-650-trust-ratings-%E2%9C%85-buying-golden-frying-pan-for-4750/

https://backpack.tf/trust/76561199183171982

~7400 keys at $1.45

$1.45 / 69.11 = $0.021

https://forums.backpack.tf/topic/84588-selling-keys-156-and-60-unusuals-for-great-deals-via-paypal-usdeur/

https://backpack.tf/trust/76561198045466865

285 keys at $1.56

$1.56 / 69.11 = $0.023

https://forums.backpack.tf/topic/78131-wtb-bulk-tf2-keys-tod-tickets-and-backpacks-with-crypto-usdcusdt-and-paypal-146-each-keys-67-each-tod-i-cover-all-fees-300-rep-%E2%9C%94%EF%B8%8F/

https://backpack.tf/trust/76561198060299122

850 keys at $1.46

$1.46 / 69.11 = $0.021

https://forums.backpack.tf/topic/38397-%F0%9F%9F%A2frost-is-buying-inventories-keys-for-144-crypto-139-paypal-1000-trust-ratings%E2%9C%85-no-rep-needed/

https://backpack.tf/trust/76561198061836787

~1700 keys at $1.39

$1.39 / 69.11 = $0.020

https://forums.backpack.tf/topic/84656-restock-7000-keys-pure-selling-keys-for-usd-155-discount-for-bulk-buyers-500-154-paypal/

https://backpack.tf/trust/76561198066501392

2100+ at $1.54

$1.54 / 69.11 = $0.022

https://forums.backpack.tf/topic/76054-%F0%9F%92%B2-%D1%95%CE%B9%D0%B8-is-buying-keys-145-backpacks-for-paypal-%E2%9C%94%EF%B8%8F130-trust/

https://backpack.tf/trust/76561198128838220

53 at $1.45

$1.45 / 69.11 = $0.021

https://forums.backpack.tf/topic/84682-buying-keys-147-usd-via-paypal-zelle-cashapp/

https://backpack.tf/trust/76561199528694238

~1800 at $1.47

$1.47 / 69.11 = $0.021

https://forums.backpack.tf/topic/68510-buying-keys-for-146-backpacks-via-paypal-600-trust-ratings%E2%9C%85/

https://backpack.tf/trust/76561198032176942

~2000 at $1.46

$1.46 / 69.11 = $0.021

https://forums.backpack.tf/topic/84631-selling-tf2-keys-for-paypal-154/

https://backpack.tf/trust/76561198057412106

~1400 at $1.54

$1.54 / 69.11 = $0.022

https://forums.backpack.tf/topic/84136-safety-first-%F0%9F%92%AF-fiky-is-buying-keys-for-150-usd-backpacksitems-tods-070-paypal-%E2%9C%85%F0%9F%92%9C/

https://backpack.tf/trust/76561199041022874

~600 at $1.5

$1.5 / 69.11 = $0.022

https://forums.backpack.tf/topic/84714-buying-keys-151-usd-paypal-eu-region-prefferably-for-no-fees-will-go-first-if-you-are-reputable/

https://backpack.tf/trust/76561198040965652

~1000 at $1.51

$1.51 / 69.11 = $0.022

https://forums.backpack.tf/topic/84691-buying-keys-backpacks-cs2-with-paypalwisecrypto-keys-148-paypal-or-wise-keys-146-crypto/

https://backpack.tf/trust/76561198220098345

~2200 at $1.48

$1.48 / 69.11 = $0.021

Sales:

1700 @ $0.020

14000 @ $0.021

5700 @ $0.022

285 @ $0.023

$0.020 and $0.023 seem more outlierish and less common selling points relative to $0.021 and $0.022. Going with $0.021 - 0.022.