1 recent sale on marketplace.tf - https://marketplace.tf/items/tf2/31090;5;u138

Jan 23rd, 2020 - $149.99 / $1.78 = 84.26 keys - https://manic.tf/keyprice/?at=2020-01-23&price=149.99

Rounding down to 84 keys

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using here: https://backpack.tf/item/8387027488

sale 1:

https://backpack.tf/profiles/76561198299054455#!/compare/1579824000/1579910400

https://backpack.tf/profiles/76561198819747735#!/compare/1579824000/1579910400

https://imgur.com/a/Lut25ZV - compare machine br0ke

50 pure + blizz storm translator (12.5)

Rounding up to 63

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63, 85

taking 63-84