https://backpack.tf/profiles/76561198169995378#!/compare/1512172800/1512345600

http://www.tf2outpost.com/trade/29440917

33 pure (qs)

https://backpack.tf/profiles/76561198133392504#!/compare/1512345600/1512518400

Sold for 35 pure (qs)

https://backpack.tf/profiles/76561197980239391#!/compare/1512604800/1512691200

34 pure (qs)

https://backpack.tf/profiles/76561198136017741#!/compare/1512604800/1512691200

34 pure (qs)

https://backpack.tf/profiles/76561198251704884#!/compare/1514592000/1514678400

DBD Metal Pile (45) + ~5 keys sweets = 50 keys

https://backpack.tf/profiles/76561198121057673#!/compare/1514937600/1515024000

C9 Salty Dog (unsold @46: https://imgur.com/a/SJksl ) = 46

https://backpack.tf/profiles/76561198379583439#!/compare/1510531200/1510617600

36 keys in items (sold in 1 day)

https://backpack.tf/profiles/76561198068697940#!/compare/1512432000/1512518400

Starstorm Insomnia L'homme Burglerre (52.5 keys) = 53

High outlier

https://backpack.tf/profiles/76561198139276623#!/compare/1512432000/1512518400

31 pure (qs)

https://backpack.tf/profiles/76561198106687347#!/compare/1512518400/1512604800

Cards Nunhood (unsold @33: https://imgur.com/a/NRkdP ) + 2 pure = 35

https://backpack.tf/profiles/76561198297845980#!/compare/1512604800/1512691200

33 pure (qs)

Summary:

Sales at: 46, 50, 53

All sales in 30-35 range were qsales, though there were 8 sales in this range, which shows ~35 is a common trading point here

53 high outlier

Taking 35-50

Last sugg with all non-used here sales:

https://backpack.tf/suggestion/5a4e582a44325a5f455fd329