Credits to Erik and K1ng:

Erik confirmed sale 2 was a bulk buy for pure for the listed B/Os. 120-160 should work.

https://backpack.tf/item/4267168710 - listed on MC.store for $400

https://backpack.tf/item/4402078116

Sale 1:

https://backpack.tf/profiles/76561199187001967#!/compare/1635638400/1635724800

~100k buy order

Sale 2:

https://backpack.tf/profiles/76561198453530349#!/compare/1635638400/1635724800

https://backpack.tf/profiles/76561198091502579#!/compare/1635724800/1635811200

looks bulky alongside ge baker, planets boa, taunts etc., B/O at 121k https://gladiator.tf/listings/617fcb76982ecf4b4fc9dde8

Erik's confirmation makes this sale ~120k.

Sale 3:

https://backpack.tf/profiles/76561198091502579#!/compare/1635811200/1635897600

https://backpack.tf/profiles/76561199215361135#!/compare/1636070400/1636070400

nothing, maybe this is the nov 5 MP sale? - the fast sale afterwards would also support excluding 121 if it were verifiable

Sale 4:

https://marketplace.tf/items/tf2/30704;5;u103

$299.99/1.87=~160k

Sale 5:

https://backpack.tf/profiles/76561198114402400#!/compare/1632009600/1632096000

146k

Sale 6:

https://backpack.tf/profiles/76561198059604047#!/compare/1632096000/1632268800

https://backpack.tf/profiles/76561198138478947#!/compare/1632096000/1632182400

looks like a gift

120-160k as per K1ng's comments.