Money for nothing

Using last 2 months.

Sale 1:

Sold for $34.49 on Marketplace.tf

https://marketplace.tf/items/1015;5;u3007

34.49/1.98 = ~17.4

X = 17

Sale 2:

Sold for ~13 keys in pure/items

http://www.tf2outpost.com/trade/29565837 - B/O of 13

Seller: https://backpack.tf/profiles/76561198044203779#!/compare/1522886400/1523059200

Buyer: https://backpack.tf/profiles/76561198045122249#!/compare/1522972800/1523059200

X = 13

Sale 3:

Sold in ~3 days for 9 keys

Seller: https://backpack.tf/profiles/76561198086076383#!/compare/1523404800/1523491200

Buyer: https://backpack.tf/profiles/76561198434701820#!/compare/1523404800/1523491200

X = 9

Sale 4:

Sold for Strange Pro. KS Grenade Launcher (~7)

Seller: https://backpack.tf/profiles/76561198090409013#!/compare/1522195200/1522454400

Buyer: https://backpack.tf/profiles/76561198073825431#!/compare/1522368000/1522454400

Market on the Nade was limited, so I used bot.tf stats: https://i.imgur.com/wnpmfwr.png

X = 7

Sale 5:

Bulk for Cloud 9 Lucky Shot

Seller: https://backpack.tf/profiles/76561198361859002#!/compare/1524009600/1524096000

Buyer: https://backpack.tf/profiles/76561198159201884#!/compare/1524009600/1524182400

Sale 6:

Bulk for Infernal Flames Kazotsky

Seller: https://backpack.tf/profiles/76561198050173215#!/compare/1521590400/1521676800

Buyer: https://backpack.tf/profiles/76561197994587943#!/compare/1521331200/1521676800

Sellers:

13 keys:

https://i.imgur.com/R4icxgi.png

https://backpack.tf/item/1475592188

14 keys:

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

https://backpack.tf/item/6058645125

20 keys:

https://i.imgur.com/wBF7ZMd.png

https://backpack.tf/item/4904355388

22 keys:

https://i.imgur.com/XlUaX0t.png

https://backpack.tf/item/1473629129

Sales at:

7

9

13

17

17 seems pretty high given the cheaper sellers, excluding 17.

7 and 9 also seem pretty low. Should be safe to exclude them given the median is pretty close to 13 here.

Going with 13 flat.