I like puzzles

Sale 1)

https://backpack.tf/profiles/76561198043932467#!/compare/1479686400/1479859200

Sold 22 Pure

Sale 2)

https://backpack.tf/profiles/76561198043932467#!/compare/1479427200/1479513600

Keys and Pro Ks Weren't actually involved Histories don't line up! Guessing SCM or Paypal Sale

Sale 3)

https://backpack.tf/profiles/76561198329023090#!/compare/1477267200/1477353600

Sold 19 Pure

Sale 4)

https://backpack.tf/profiles/76561198182178075#!/compare/1477958400/1478908800

Sold with Vintage Killstreak Lugermorph + Strange Killstreak Jag for an Aces High Tough Stuff Muffs

VKL -

4.61 https://backpack.tf/item/3049256078 - Young

4.73 https://backpack.tf/item/1302963862 - 5 Days

Mid point = 4.67

SKJ - 3 Buyers @ 12

https://backpack.tf/u/76561198011321852

Taking 12 ref

AHTSM -

https://backpack.tf/profiles/76561198097588802#!/compare/1475712000/1476748800

Sold with TF Logo Engineer's Cap for Miami Nights Tough Stuff Muffs

Works out at backpack.tf price of 32 keys

32 - 4.67 - 0.49 = 26.84 - Rounds to 27 Keys

Sale 5)

http://backpack.tf/profiles/76561198014404374#!/compare/1479340800/1479427200

Sold for TF Logo Buckaroos Hat + 13 Keys

TFLBH -

http://backpack.tf/suggestion/58261e0483de6b703a5fc56b - 2 Weeks Ago for 16.5 Keys

This sale = 29.5

The Sales we have are:

22, 19, 27, 29.5

19 is countered by buyer @ 20:

https://backpack.tf/u/76561197964393843

29.5 Is rounded to 30 and isn't an outlier as we also have 27 so...

20-30 Keys?

Thanks =)