Sale 1:

Sold for Bubbling Toy Tailor (13.5)

http://www.tf2outpost.com/trade/29351161 - B/O of 14

Seller: https://backpack.tf/profiles/76561198061489334#!/compare/1505520000/1505606400

Buyer: https://backpack.tf/profiles/76561198122589898#!/compare/1505520000/1505606400

X = 13 (Rounding down, due to the seller at 13 on the toy tailor)

Sale 2:

Sold with a key for Steaming Pom-Pommed Provocateur (13.5)

http://www.tf2outpost.com/trade/29329550 - B/O of 13

Seller: https://backpack.tf/profiles/76561198043847267#!/compare/1502841600/1503014400

Buyer: https://backpack.tf/profiles/76561198139656272#!/compare/1502928000/1503014400

X = 13

Sale 3:

Sold for Kill-a-Watt L’Homme Burglerre (Suggestion at 13)

No outpost

Seller: https://backpack.tf/profiles/76561198139656272#!/compare/1502668800/1502755200

Buyer: https://backpack.tf/profiles/76561198122589898#!/compare/1502668800/1502755200

X = 13

Sale 4:

Quicksold for 10 keys

No outpost

Seller: https://backpack.tf/profiles/76561198202135278#!/compare/1503705600/1503792000

Buyer: https://backpack.tf/profiles/76561198269371230#!/compare/1503705600/1503792000

X = 10

Sale 5:

Sold for 8 keys + 15 ref (>0.5 at the time)

http://www.tf2outpost.com/trade/29323324 - B/O of 9

Seller: https://backpack.tf/profiles/76561198119557421#!/compare/1502496000/1502582400

Buyer: https://backpack.tf/profiles/76561198129499386#!/compare/1502496000/1502582400

X = 9

Sale 6:

Sold for Stormy Storm Carouser’s Capotain

http://www.tf2outpost.com/trade/29338686 - B/O of 14.5

Seller: https://backpack.tf/profiles/76561198114379995#!/compare/1503619200/1503705600

Buyer: https://backpack.tf/profiles/76561198064589227#!/compare/1503619200/1503705600

Seems rather low, especially with the seller at ~10.3, which would make this sale ~10 keys. Excluding.

Sale 7:

Sold with ~2 keys in items for Orbiting Fire Tavish DeGroot

Seller: https://backpack.tf/profiles/76561198064589227#!/compare/1503705600/1503792000

Buyer: https://backpack.tf/profiles/76561198202135278#!/compare/1503619200/1503705600

Should be used on the DeGroot.

Sale 8:

Sold with > 0.5 keys in items for Orbiting Fire German Gonzila

Seller: https://backpack.tf/profiles/76561198269371230#!/compare/1503964800/1504051200

Buyer: https://backpack.tf/profiles/76561198061489334#!/compare/1503964800/1504051200

Would be better to use on the Gonzila.

Kill-a-Watt L’Homme Burglerre:

https://backpack.tf/suggestion/59bfd3f2cf6c752f9d76f250

Sellers:

14 keys:

https://i.imgur.com/aifNciA.png - 10 months

https://i.imgur.com/f8QVoJD.jpg - 1 day

Sales at:

9

10

13 (3x)

Going with 13 flat.