https://marketplace.tf/items/tf2/1118;5;u3048

Oct 19 - $43.5 / $1.87 = 23.26 keys

Nov 8 - $38 / $1.81 = 20.99 keys

Nov 14 - $38 / $1.79 = 21.23 keys

Nov 17 - $24.44 / $1.77 = 13.81 keys

Dec 7 - $29.99 / $1.76 = 17.04 keys

https://backpack.tf/item/3011959889

https://backpack.tf/profiles/76561197963500354#!/compare/1610496000/1610582400

https://backpack.tf/profiles/76561198223928572#!/compare/1610496000/1610582400

Untraceable

https://backpack.tf/profiles/76561199067426629#!/compare/1602979200/1603152000

https://backpack.tf/profiles/76561198086337645#!/compare/1602806400/1603065600

Unusualified

https://backpack.tf/profiles/76561198236425506#!/compare/1605657600/1605744000

https://backpack.tf/profiles/76561198021055079#!/compare/1605657600/1605744000

Bulk

https://backpack.tf/profiles/76561198083328505#!/compare/1603929600/1604016000

https://backpack.tf/profiles/76561198219288407#!/compare/1603929600/1604361600

15 keys matches in 1st compare

https://backpack.tf/profiles/76561198219288407#!/compare/1604534400/1604707200

https://backpack.tf/profiles/76561198050493804#!/compare/1604534400/1605052800

20 keys matches

https://backpack.tf/profiles/76561198132719192#!/compare/1604707200/1606262400

https://backpack.tf/profiles/76561198097499917#!/compare/1604707200/1604793600

Unusualified

https://backpack.tf/profiles/76561198106318531#!/compare/1605312000/1605484800

https://backpack.tf/profiles/76561198097499917#!/compare/1605225600/1605312000

Looks like November 14 Marketplace sale

https://backpack.tf/profiles/76561198142584166#!/compare/1604707200/1604793600

https://backpack.tf/profiles/76561198998967000#!/compare/1593302400/1607817600

Untraceable

Sales

14

15

17

20

21

21

23

Classifieds:

https://gyazo.com/9d3f74eb5306ac325901451d2f4aa80a

Buyers to 13

3 days old and 11 days old at 20

much longer above 20

Going with 14-20