Item 1:

https://backpack.tf/item/11503467763

Sale 1:

https://backpack.tf/profiles/76561198107182368#!/compare/1751760000/1751932800

https://backpack.tf/profiles/76561199564942025#!/compare/1751846400/1751932800

Sold for 31 keys pure and 0.77 ref. (ID 15910837981)

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Item 2:

https://backpack.tf/item/7923744832

Sale 2 and 3:

https://marketplace.tf/items/tf2/31025;5;u62

Sold for $80 on the 29th of May

Sold for $99.99 on the 18th of July

Keys were:

https://marketplace.tf/items/tf2/5021;6

29th - $1.93 (80/1.93) = 41.4 (Rounding to 41)

19th - $2.01 (99.99/2.01) = 49.7 (Rounding up to 50)

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Sellers:

BPTF - https://imgur.com/a/mc9aNzW - 1 @ 43 keys, 1 @ 45 keys

MPTF - https://marketplace.tf/items/tf2/31025;5;u62 - 1 @ $99.99

STN - https://stntrading.eu/item/tf2/Unusual+Disco+Beat+Down+Climbing+Commander - None

SCM - https://steamcommunity.com/market/listings/440/Unusual%20Climbing%20Commander?filter=Disco+Beat+Down - None

Sale(s):

31, 41, 50

Considering buyers are at 35 keys now (for over a month) keeping the sale at 31 out of the range.

Going with 41 - 50 keys