Sale 1:

Sold for 20 keys

http://www.tf2outpost.com/trade/28726508 - No visible B/O

Seller: http://backpack.tf/profiles/76561198192602363#!/compare/1485129600/1485216000

Buyer: http://backpack.tf/profiles/76561198145546339#!/compare/1485216000/1485302400

X = 20

Sale 2:

Sold for Australium Wrench (19)

http://www.tf2outpost.com/trade/28681340 - B/O of 18

Seller: http://backpack.tf/profiles/76561198261040553#!/compare/1482710400/1482796800

Buyer: http://backpack.tf/profiles/76561198288303815#!/compare/1482710400/1482796800

X = 18 (Capped by B/O)

Sale 3:

Sold for 17 keys

http://www.tf2outpost.com/trade/28624313 - B/O of 18

Seller: http://backpack.tf/profiles/76561198109727272#!/compare/1483488000/1483574400

Buyer: http://backpack.tf/profiles/76561198129504653#!/compare/1483228800/1483574400

X = 17

Sale 4:

Sold for Bubbling Powdered Practitioner

Seller: http://backpack.tf/profiles/76561198114604882#!/compare/1486684800/1486771200

Buyer: http://backpack.tf/profiles/76561198070507251#!/compare/1486684800/1486771200

Would be better to update the Practitioner with this sale.

Sale 5:

Sold for Atomic Head Full of Hot Air

No outpost

Seller: http://backpack.tf/profiles/76561198129504653#!/compare/1483574400/1484352000

Buyer: http://backpack.tf/profiles/76561198337757238#!/compare/1484265600/1484352000

Should be used to update the Head Full of Hot Air

Sale 6:

Sold for Orbiting Fire Noble

No outpost

Seller: http://backpack.tf/profiles/76561198086948995#!/compare/1482796800/1482883200

Buyer: http://backpack.tf/profiles/76561198225581944#!/compare/1482883200/1482969600

May be better to update the Orbiting Fire Noble with this sale, due to the lack of B/O here. Otherwise this may end up creating an unnecessarily large range.

Sale 7:

Sold with Kazotsky Kick for Aces High Noble

Seller: http://backpack.tf/profiles/76561198225581944#!/compare/1483747200/1483833600

Buyer: http://backpack.tf/profiles/76561197999432117#!/compare/1483228800/1483833600

Should be used to update the Aces Noble, due to items being added with the Smoking Noble.

Sale 8:

Sold for Searing Plasma Ol’ Snaggletooth

No outpost

Seller: http://backpack.tf/profiles/76561197999432117#!/compare/1486080000/1486166400

Buyer: http://backpack.tf/profiles/76561198196339186#!/compare/1485820800/1486166400

May be better to update the Snaggle with this sale, due to lack of B/O, as well as the Snaggletooth being somewhat overpriced, with a seller at 19 that hasn’t quicksold. If not, it will probably fall into the range here anyways.

Sale 9:

Sold with 17 keys for Terror-Watt Modest (46.5)

No outpost

Seller: http://backpack.tf/profiles/76561198337757238#!/compare/1485129600/1485216000

Buyer: http://backpack.tf/profiles/76561198135869440#!/compare/1485129600/1485216000

Sale is too complex to be used here.

Sellers:

18 keys:

http://www.tf2outpost.com/trade/28737945 - 3 weeks

http://backpack.tf/u/76561198135869440

20 keys:

http://i.imgur.com/24whleC.png

http://backpack.tf/u/76561198070507251

http://www.tf2outpost.com/trade/28774231 - 6 days

20.72 keys:

http://i.imgur.com/Va0QzXU.jpg

http://backpack.tf/u/76561198196339186

http://www.tf2outpost.com/trade/28761252 - 1 week, listed as 21 here.

Sales at:

17

18

20

I feel that I may have excluded too many sales here, though the sales I haven’t excluded are either pure or australiums, which are as good as pure.

Going with 17-20.