Sale #1 - 500 pure (maybe more, would fall in range)

https://backpack.tf/profiles/76561198074655901#!/compare/1564963200/1565136000

https://backpack.tf/profiles/76561198093466032#!/compare/1565049600/1565136000

Sale #2 - 332 pure (maybe more)

https://backpack.tf/profiles/76561198141382684#!/compare/1563494400/1563667200

https://backpack.tf/profiles/76561198074655901#!/compare/1563580800/1563667200

Sale #3 - 190 pure + scorching pencil's pusher indate at 369 keys = 559

https://backpack.tf/profiles/76561198160856661#!/cmpare/1559952000/1560038400

https://backpack.tf/profiles/76561198141382684#!/compare/1559952000/1560038400

Sale #4 -

https://backpack.tf/profiles/76561197992711280#!/compare/1570924800/1571011200

https://backpack.tf/profiles/76561198066741936#!/compare/1570838400/1570924800

https://backpack.tf/suggestion/5da4a317d381724c170b11b4 370 used here

50 + 370 = 420

Sale #5 -

https://backpack.tf/profiles/76561198011321852#!/compare/1564876800/1564963200

https://backpack.tf/profiles/76561198047994051#!/compare/1564876800/1564963200

Sf glasgow (mini at 125), pe starboard (indate at 65), bf yellow belt (mini at 210) and 100 pure

Minis -

Belt - https://backpack.tf/suggestion/5d9ba94cd381724ddf0f1bd6 210

Glasgow - https://backpack.tf/suggestion/5dabd662678072422d2df41d 125

125 + 65 + 210 + 100 = 500

Sale #6 -

https://marketplace.tf/items/tf2/920;5;u13

https://marketplace.tf/items/tf2/5021;6

$1399.99 / $1.81 = 773.48 keys

Buyer resold for alot less so excluding - https://backpack.tf/profiles/76561198118744277#!/compare/1565740800/1565827200

Sale #7 -

https://backpack.tf/profiles/76561198116779194#!/compare/1568419200/1568505600

https://backpack.tf/profiles/76561198129552058#!/compare/1568419200/1568505600

Bulk

Sellers - https://imgur.com/a/q9D1Ab5

Young seller to watch at 450

Sales - 500, 332 (maybe more), 559, 420, 500, 773

Going to call 332 low, and 773 high and go with 420-560 (rounded)