I like French

Je ne t'abandonnerai jamais. Je ne te laisserai jamais tomber

Sellers: - https://gyazo.com/3e8da79d41b16a7ceeb4cd46ff5d69d7

https://backpack.tf/item/1983014185 - 1 month @ 11 keys

https://backpack.tf/item/1908548066 - 14 days @ 12 keys

https://backpack.tf/item/1444099381 - 7 months @ 12 keys

https://backpack.tf/item/10122381889 - 22 days @ 14 keys

Sale 1)

https://backpack.tf/profiles/76561199084784906#!/compare/1620259200/1620345600 - Bulk

Sale 2)

https://backpack.tf/profiles/76561198195734346#!/compare/1621468800/1621555200

https://backpack.tf/profiles/76561199084784906#!/compare/1621468800/1621555200

https://gyazo.com/9865795961aa83b9ee8dac9530f6c8f0 - Sold for 9 keys

Sale 3)

https://backpack.tf/profiles/76561198063640894#!/compare/1618358400/1618531200

https://backpack.tf/profiles/76561198415564349#!/compare/1618358400/1618444800 - Bulk

Sale 4)

https://backpack.tf/profiles/76561198031743044#!/compare/1618272000/1618358400

https://backpack.tf/profiles/76561198063640894#!/compare/1618272000/1618358400 - Bulk

Sale 5)

https://backpack.tf/profiles/76561199112225445#!/compare/1617494400/1617580800 - Untrace

Sale 6)

https://backpack.tf/profiles/76561199112225445#!/compare/1617408000/1617494400 - Untrace

Sale 7)

https://backpack.tf/profiles/76561198415795027#!/compare/1617408000/1617494400 - Bulk

Sale 8)

https://backpack.tf/profiles/76561198415795027#!/compare/1617321600/1617408000 - Sold with 4 keys for a Strange Specialized Killstreak Australium Ambassador (~11 keys at the time) = 7 keys

Sale 9)

https://backpack.tf/profiles/76561198089388084#!/compare/1618012800/1620000000

https://backpack.tf/profiles/76561198001812215#!/compare/1619654400/1620000000 - Bulk

Sale 10)

https://backpack.tf/profiles/76561198097292062#!/compare/1614988800/1615075200

https://backpack.tf/profiles/76561198089388084#!/compare/1614988800/1615075200 - Bulk

Sale 11)

https://backpack.tf/profiles/76561198088822281#!/compare/1619568000/1619740800

https://backpack.tf/profiles/76561198225796692#!/compare/1619568000/1619654400 - Sold for 11 keys

Sale 12)

https://backpack.tf/profiles/76561198841279602#!/compare/1616198400/1616284800

https://backpack.tf/profiles/76561198088822281#!/compare/1616284800/1616371200

https://gladiator.tf/listings/60562b8cc1644755325d4e33 - Sold for 8 keys + 16 ref (~0.3 keys) = 8.5 keys

Note: - https://backpack.tf/item/1584294450 - Excluding loot.farm transfers

Sale 13)

https://backpack.tf/profiles/76561198295593068#!/compare/1616198400/1616544000

https://backpack.tf/profiles/76561199102407070#!/compare/1616112000/1616198400 - Sold via buy order, likely for ~7 keys https://gladiator.tf/listings/605592210f34113fe8e748b4 - Seller paid 9 keys so excluding.

Sale 14)

https://backpack.tf/profiles/76561198850274253#!/compare/1616112000/1616198400

https://backpack.tf/profiles/76561198295593068#!/compare/1616112000/1616198400 - Sold for 9 keys, then resold for 7 keys to a buyer. Excluding.

Sale 15)

https://backpack.tf/profiles/76561198850274253#!/compare/1614643200/1614729600 - Bulk

Sale 16)

https://backpack.tf/item/937690365 https://marketplace.tf/items/tf2/180;5;u34

$24.99 / $2.08 = 12 keys

Sales:

7, 8.5, 9, 11 and 12

Calling 7 low due to buyers

Calling 12 high due to unsold and excluding a low-end sale also helps to keep this range evened out

Thanks =)