Sales 1, 2 & 3:

Sold for $45, $39.6 and $18 on Marketplace.tf

https://marketplace.tf/items/53;5;u29

https://backpack.tf/item/666777197

https://backpack.tf/item/819677119

$18 is being excluded, for obvious reasons.

45/1.9 = ~23.7

39.6/2 = 19.8

X = 24

X = 20

Sale 4:

Sold for Purple Confetti Gentleman’s Gatsby (21) + ~1 key in items

No outpost

Seller: https://backpack.tf/profiles/76561198158206236#!/compare/1510531200/1510617600

Buyer: https://backpack.tf/profiles/76561198314329325#!/compare/1510531200/1510617600

X = 22

Sale 5:

Sold for 19 keys

Seller: https://backpack.tf/profiles/76561198106917670#!/compare/1509667200/1509753600

Buyer: https://backpack.tf/profiles/76561198179712943#!/compare/1509667200/1509753600

X = 19

Sale 6:

Sold for 16 keys

Seller: https://backpack.tf/profiles/76561198179712943#!/compare/1510012800/1510272000

Buyer: https://backpack.tf/profiles/76561198183424550#!/compare/1510012800/1510272000

X = 16

Sale 7:

Sold for 14 keys (ID’s match)

Seller: https://backpack.tf/profiles/76561198163724445#!/compare/1507334400/1507420800

Buyer: https://backpack.tf/profiles/76561198067741299#!/compare/1507248000/1507334400

X = 14

Sale 8:

Sold for Frostbite Janissary Ketche + ~2 keys in items

Seller: https://backpack.tf/profiles/76561198132226518#!/compare/1510272000/1510358400

Buyer: https://backpack.tf/profiles/76561198042530923#!/compare/1510272000/1510358400

Will most likely fall into the range.

Sale 9:

Sold for Neutron Star Noble Nickel

Seller: https://backpack.tf/profiles/76561198002757046#!/compare/1507334400/1507420800

Buyer: https://backpack.tf/profiles/76561198227657840#!/compare/1507161600/1507420800

Can be used to update the Nickel.

Sale 10:

Sold for Terror-Watt Dead Cone + 1 key

Seller: https://backpack.tf/profiles/76561198109408338#!/compare/1506988800/1507075200

Buyer: https://backpack.tf/profiles/76561198163724445#!/compare/1506988800/1507075200

Was used on the Dead Cone.

Sellers:

20 keys:

https://i.imgur.com/5OIOpvR.png - young

23 keys:

https://i.imgur.com/l4mhRlg.png

Sales at:

14

16

19

20

22

24

Buyer at 14. Excluding 14.

16 seems low. Excluding 16.

Going with 19-24.