Sale 1 & 2:

Sold for $24.99 and $29.98 on Marketplace.tf

https://marketplace.tf/items/30182;5;u18

https://backpack.tf/item/4553639263

Can’t identify the other one

24.99/1.9 = ~13.2

29.98/1.96 = ~15.3

X = 13 & 15

Sale 3:

Sold for Dead Presidents Wet Works (15.5)

http://www.tf2outpost.com/trade/29368455 - B/O of 16

Seller: https://backpack.tf/profiles/76561198118921483#!/compare/1505433600/1505692800

Buyer: https://backpack.tf/profiles/76561198126187096#!/compare/1505606400/1505692800

Was used on the Wet Works, but wasn’t used to set a range there. Also, gonna round down due to the sellers on the burg at 14 and 15.

X = 15

Sale 4:

Sold for 14 keys

Seller: https://backpack.tf/profiles/76561198071484699#!/compare/1506384000/1506470400

Buyer: https://backpack.tf/profiles/76561198203041097#!/compare/1506384000/1506470400

X = 14

Sale 5:

Sold for Purple Confetti Stainless Pot (14)

No outpost

Seller: https://backpack.tf/profiles/76561198044195191#!/compare/1504656000/1504828800

Buyer: https://backpack.tf/profiles/76561198310870057#!/compare/1504742400/1504828800

X = 14

Sale 6:

Sold for 12 keys

Seller: https://backpack.tf/profiles/76561198117186026#!/compare/1506816000/1506902400

Buyer: https://backpack.tf/profiles/76561198227757008#!/compare/1506816000/1506902400

X = 12

Sale 7:

Sold with some ref for Cloud 9 Buckaroo’s Hat

Seller: https://backpack.tf/profiles/76561198158829021#!/compare/1509667200/1509926400

Buyer: https://backpack.tf/profiles/76561197996095002#!/compare/1509840000/1509926400

Can be used on the Buckaroo’s.

Sale 8:

Sold with cheap items for Blizzardy Voodoo JuJu

Seller: https://backpack.tf/profiles/76561198036695300#!/compare/1505952000/1506038400

Buyer: https://backpack.tf/profiles/76561198117186026#!/compare/1505779200/1506038400

Sale 9:

Sold with ~1 key in items for Green Confetti Jumper’s Jeepcap

Seller: https://backpack.tf/profiles/76561198310870057#!/compare/1505260800/1505347200

Buyer: https://backpack.tf/profiles/76561198118921483#!/compare/1505174400/1505347200

Can be used on the Jeepcap.

Sale 10:

Bulk for Peace Chullo

Seller: https://backpack.tf/profiles/76561198208582767#!/compare/1509062400/1509235200

Buyer: https://backpack.tf/profiles/76561198065409820#!/compare/1509148800/1509235200

Sellers:

14 keys:

https://i.imgur.com/oMrMnjy.png - young

15 keys:

https://i.imgur.com/aqax8lm.png - 14 days

17 keys:

https://i.imgur.com/AccO0cn.png - 4 months

https://i.imgur.com/CGcErZa.png - 6 days

http://www.tf2outpost.com/trade/29459174 - 1 day

21 keys:

https://i.imgur.com/LAtgJK0.png - 8 months

Offers:

http://www.tf2outpost.com/trade/29451704 - 6 days

Sales at:

12

13

14 (2x)

15 (2x)

Going with 12-15.