Sales 1, 2, 3 & 4:

https://marketplace.tf/items/1116;5;u3010

http://www.tf2outpost.com/trade/29615091 - B/O of 6 on either the $11.95 or $11.90 sale

https://backpack.tf/item/4003397947

13/1.96 = ~6.63

11.99/1.98 = ~6.06

11.95/1.95 = ~6.13

11.9/1.95 = ~~6.1

X = 6.5

X = 6 (3x)

Sale 5:

Sold for 6 keys

Seller: https://backpack.tf/profiles/76561198011321852#!/compare/1523664000/1523750400

Buyer: https://backpack.tf/profiles/76561198058926769#!/compare/1523750400/1523923200

X = 6

Sale 6:

Quicksold for 4 keys + Conga (~1)

Seller: https://backpack.tf/profiles/76561198073403156#!/compare/1522454400/1522627200

Buyer: https://backpack.tf/profiles/76561198129499386#!/compare/1522540800/1522627200

X = 5

Sale 7:

Sold for Pro. KS C.A.P.P.E.R (4)

Seller: https://backpack.tf/profiles/76561198137326742#!/compare/1524960000/1525046400

Buyer: https://backpack.tf/profiles/76561198116897345#!/compare/1524787200/1525046400

X = 4

Sale 8:

Sold for Flies Tartan Tyrolean

No outpost

Seller: https://backpack.tf/profiles/76561198116897345#!/compare/1524787200/1525046400

Buyer: https://backpack.tf/profiles/76561198331974785#!/compare/1524528000/1525132800

Gonna be very high, excluding.

Sale 9:

Sold for Steaming Counterfeit Billycock

No outpost

Seller: https://backpack.tf/profiles/76561198343347319#!/compare/1522540800/1522627200

Buyer: https://backpack.tf/profiles/76561198073403156#!/compare/1522454400/1522627200

Gonna be an outlier without a B/O cap, excluding.

Sale 10:

Sold with ~0.5 keys in items for 4 keys + 7 ref

Seller: https://backpack.tf/profiles/76561198183756085#!/compare/1524873600/1524960000

Buyer: https://backpack.tf/profiles/76561198341086501#!/compare/1524873600/1524960000

low, excluding.

Sellers:

5 keys:

https://i.imgur.com/BaqPA3f.png

https://backpack.tf/item/6791229925

6 keys:

https://i.imgur.com/Hdz52cJ.png

https://backpack.tf/item/3333719603

https://backpack.tf/item/2745796885

https://backpack.tf/item/4587079587

~6.9 keys:

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

https://backpack.tf/item/3321626247

7 keys:

https://i.imgur.com/52eqtyg.png

https://backpack.tf/item/3954186011

11 keys:

https://i.imgur.com/IkKA6ns.png

https://backpack.tf/item/6761231424

~13.7 keys:

https://i.imgur.com/mizWB6D.png

https://backpack.tf/item/4161889651

Offers:

http://www.tf2outpost.com/trade/28780733 - set

Sales at:[/u]

4

5

6 (4x)

6.5

6.5 is an outlier given the cheaper sellers, excluding 6.5.

https://i.imgur.com/YkYiuGi.png - Buyer at ~4.25, excluding 4.

5 may have quicksold, but the current seller at 5 supports it being in the range.

Going with 5-6.