Resuggest from https://backpack.tf/suggestion/5fb111106e4cee30d262d54d

https://marketplace.tf/items/tf2/1107;5;u3033

October 31 2020: $59.99/1.82=32.96 keys ~33

No buyout https://bot.tf/stats/listings/4WQ1E2O7

November 17: $17.5/1.75=10 keys

no buyout https://bot.tf/stats/listings/4PV5EJ90

November 18: $35/1.72=20.35 ~20 keys

no buyout https://bot.tf/stats/listings/MXEVRQJD

(OLD SALES FROM PAST SUGGESTION NOW OUTDATED)

https://backpack.tf/item/8360611818

Untraceable sale (sold to Quicksell.store)

https://backpack.tf/profiles/76561198094681388#!/compare/1598400000/1600473600

https://backpack.tf/profiles/76561199084784906#!/compare/1599782400/1605398400

Untraceable:

https://backpack.tf/profiles/76561199084784906#!/compare/1602460800/1602547200

https://backpack.tf/profiles/76561198091502579#!/compare/1602460800/1602547200

We have 10, 20 and 33.

Excluding 10 because buyers are higher (from 12 to 12.53 keys)

Excluding 33 because there are two sellers at $45.99 (~26 keys taking today's key price $1.76)

Going 20 flat