Sale 1:

Most likely sold for 25 keys

http://www.tf2outpost.com/trade/29417659 - B/O of 25

Seller: https://backpack.tf/profiles/76561198053747026#!/compare/1510963200/1511049600

Buyer: https://backpack.tf/profiles/76561198081629778#!/compare/1484438400/1511049600

Buyer’s backpack hadn’t been scanned in several months, which would explain why their name doesn’t appear on the key histories. Can almost guarantee that the 25 keys in the seller’s backpack came from the buyer here. If this is incorrect, it is pretty close to the high-end anyways.

X = 25

Sale 2:

Sold for 24 keys

Seller: https://backpack.tf/profiles/76561198259219989#!/compare/1509494400/1509580800

Buyer: https://backpack.tf/profiles/76561198140040524#!/compare/1509408000/1509667200

X = 24

Sale 3:

Sold for 22 keys

Seller: https://backpack.tf/profiles/76561198053549889#!/compare/1508889600/1508976000

Buyer: https://backpack.tf/profiles/76561198259219989#!/compare/1508889600/1508976000

X = 22

Sale 4:

Sold for 22 keys

Seller: https://backpack.tf/profiles/76561198048798546#!/compare/1510704000/1511308800

Buyer: https://backpack.tf/profiles/76561198032886769#!/compare/1511222400/1511308800

X = 22

Sale 5:

Sold for 20 keys

Seller: https://backpack.tf/profiles/76561198101970268#!/compare/1508716800/1508803200

Buyer: https://backpack.tf/profiles/76561198053549889#!/compare/1508716800/1508803200

X = 20

Sale 6:

Sold for Mallard Sola Topi

Seller: https://backpack.tf/profiles/76561198140040524#!/compare/1509840000/1510099200

Buyer: https://backpack.tf/profiles/76561198048798546#!/compare/1509840000/1509926400

Can be used to price the Mallard.

Sale 7:

Sold for Slumber Tam O’ Shanter + 3 keys

Seller: https://backpack.tf/profiles/76561198183424550#!/compare/1515196800/1515283200

Buyer: https://backpack.tf/profiles/76561198087172601#!/compare/1515196800/1515283200

Can be used to price the Shanter

Sellers:

26 keys:

https://i.imgur.com/8C9P0Qp.png - 6 days

Sales at:

20

22 (2x)

24

25

Going with 20-25.