resuggest: https://backpack.tf/suggestion/5f3d91f656d1d1116c6b717b

Sale 1:

https://marketplace.tf/items/tf2/247;5;u16

$39.99 / $1.79 = 23.34 keys - b/o 20 keys - https://backpack.tf/item/5318543648

Sale 2:

bulk for mancers

https://backpack.tf/profiles/76561198033982851#!/compare/1591056000/1592438400

https://backpack.tf/profiles/76561198084367252#!/compare/1592352000/1592438400

Sale 3:

bulk for GE fez

https://backpack.tf/profiles/76561198050498715#!/compare/1597708800/1597795200

https://backpack.tf/profiles/76561198129339403#!/compare/1597708800/1597795200

Sale 4:

12 keys (QS)

https://backpack.tf/profiles/76561198129339403#!/compare/1597708800/1597795200

https://backpack.tf/profiles/76561198992823032#!/compare/1597708800/1597795200

Sale 5:

16 keys

C9 Bubble(13) + 3 keys

https://backpack.tf/profiles/76561198992823032#!/compare/1597968000/1598054400

https://backpack.tf/profiles/76561198828397490#!/compare/1597881600/1597968000

https://imgur.com/7wEVWK5

bubble: https://backpack.tf/suggestion/5f5c0080f85cb34e2a34753c

credits to scourge:

Sale 6:

using on razor

https://backpack.tf/profiles/76561198828397490#!/compare/1597968000/1598054400

https://backpack.tf/profiles/76561198271911089#!/compare/1597968000/1598054400

Sale 7:

14 keys

"checking Rubi's side aug 26 - 27 with Id matches 45 items, 14 of which history match keys"

https://backpack.tf/profiles/76561198271911089#!/compare/1598313600/1598486400

https://backpack.tf/profiles/76561198107573800#!/compare/1586908800/1598486400

=================================================================

Sales:

12,14,16,20

Scourge:

"14 - 16 is probably the call, i doubt 20 is gonna be accurate anymore"