1/1

Sale 1: $94.9

https://marketplace.tf/items/30091;5;u72

$94.9 / $1.95 = ~49 keys

Sale 2: Morning Glory Whirly Warrior (no usable sales. better used there)

https://backpack.tf/profiles/76561198232041512#!/compare/1533772800/1533859200

https://backpack.tf/profiles/76561198000247762#!/compare/1533772800/1533859200

Sale 3: Frostbite Prancer’s Pride (indate @ 31) + 47 keys pure

https://backpack.tf/profiles/76561197963521973#!/compare/1533859200/1534032000

https://backpack.tf/profiles/76561198000247762#!/compare/1533945600/1534032000

Prancer and keys do not show in second link, but the histories match.

Taking 78

Sale 4: Sold w/ 12 keys + 15 ref + Steaming Neckwear Headwear for Phosphorus Horrific Headsplitter

https://imgur.com/a/ZzfN02a

https://backpack.tf/profiles/76561198119149660#!/compare/1534982400/1535068800

Mini for neckwear: ~20k in cosmetics + stranges

https://backpack.tf/profiles/76561198119149660#!/compare/1535068800/1535155200

Mini for Horrific: 90 keys

https://backpack.tf/suggestion/5b887694cf6c75646d76ea82

90 - 32.4 = 57.6

Rounding up to 58

Valid sales we have are 49, 58, and 78

Excluding 49 as a quicksale

Round up 58 and 78 to 60 and 80

Taking range 60-80!