I like Clouds

Das is gut jaar

Sellers: - https://gyazo.com/4e305900ec45337490b10bc892318be7

https://backpack.tf/item/7957169573 - 4 Days @ 36 Keys

https://backpack.tf/item/7205054239 - 17 Days @ 40 Keys

Sale 1)

https://backpack.tf/profiles/76561198177569915#!/compare/1574899200/1574985600

https://backpack.tf/profiles/76561198259296123#!/compare/1574812800/1575331200 - Using there

Sale 2)

https://backpack.tf/profiles/76561198103217423#!/compare/1573344000/1573430400

https://backpack.tf/profiles/76561198177569915#!/compare/1573171200/1573430400 - Sold with 1 Key for a Violet Vortex Field Practice (50) = (49) Keys

No Buyout

Sale 3)

https://marketplace.tf/items/tf2/30127;5;u58 + https://backpack.tf/item/7957643244 - Sold for ~(22) Keys ($39.39 / $1.77)

Sale 4)

https://backpack.tf/profiles/76561198057897812#!/compare/1576281600/1576627200

https://backpack.tf/profiles/76561198080179568#!/compare/1576540800/1576627200 - Sold via a buy order for X Keys

Sale 5)

https://backpack.tf/profiles/76561198964865654#!/compare/1576108800/1576886400 - Bulky/Gambled

Sale 6)

https://backpack.tf/profiles/76561198372681544#!/compare/1576108800/1576195200 - Untrace

Sale 7)

https://backpack.tf/profiles/76561198197292179#!/compare/1575763200/1575849600 - Untrace

Sale 8)

https://backpack.tf/profiles/76561198167988237#!/compare/1575072000/1575417600

https://backpack.tf/profiles/76561198115686239#!/compare/1574208000/1575244800 - Sold for a Circling TF Logo Cotton Head (28) Keys

No Buyout

Sale 9)

https://backpack.tf/profiles/76561197966756586#!/compare/1574726400/1574812800 - Backpack sale

Sale 10)

https://backpack.tf/profiles/76561198060734100#!/compare/1573430400/1575158400

https://backpack.tf/profiles/76561197966756586#!/compare/1574812800/1574899200 - Untrace

Sale 11)

https://backpack.tf/item/7957643244 - Sold for ~(24) Keys ($40 / $1.67)

Sales we have are:

22, 24, 28 and 49

49 is the obvious outlier here

Thanks =)