Sale 1:

Sold with 2 keys for Memory Leak Hot Dogger (32.5)

No outpost

Seller: http://backpack.tf/profiles/76561198068450551#!/compare/1482278400/1482364800

Buyer: http://backpack.tf/profiles/76561198112660684#!/compare/1482278400/1482364800

X = 31

Sale 2:

Sold for Searing Plasma Napper's (26)

http://www.tf2outpost.com/trade/28542493 - B/O of 27

Seller: http://backpack.tf/profiles/76561198068674577#!/compare/1480204800/1480377600

Buyer: http://backpack.tf/profiles/76561198254759291#!/compare/1480291200/1480377600

X = 26

Sale 3:

Sold with 3 keys in items for Terror-Watt Front Runner (28.5)

No outpost

Seller: http://backpack.tf/profiles/76561198112660684#!/compare/1482451200/1482624000

Buyer: http://backpack.tf/profiles/76561198120576195#!/compare/1482537600/1482624000

X = 26

Sale 4:

Sold for Steaming Modest (26)

http://www.tf2outpost.com/trade/28650775 - B/O of 28

Seller: http://backpack.tf/profiles/76561198062020811#!/compare/1481241600/1481328000

Buyer: http://backpack.tf/profiles/76561198108880110#!/compare/1481241600/1481328000

X = 26

Sale 5:

Sold for Cloud 9 Cloud Crasher (Mini at 21 below)

http://www.tf2outpost.com/trade/28646324 - B/O of 25

Seller: http://backpack.tf/profiles/76561198170162405#!/compare/1480896000/1481155200

Buyer: http://backpack.tf/profiles/76561198062020811#!/compare/1481068800/1481155200

X = 21

Sale 6:

Sold for 20 keys

http://www.tf2outpost.com/trade/28672865 - B/O of 21, re-list of http://www.tf2outpost.com/trade/28661975 (~1 week total)

Seller: http://backpack.tf/profiles/76561198110263299#!/compare/1482192000/1482364800

Buyer: http://backpack.tf/profiles/76561198068450551#!/compare/1482278400/1482364800

X = 20

Sale 7:

Quicksold with ~2 keys in items for 19 keys

No outpost

Seller: http://backpack.tf/profiles/76561198254759291#!/compare/1480291200/1480377600

Buyer: http://backpack.tf/profiles/76561198138844587#!/compare/1480291200/1480377600

X = 17

Sale 8:

Sold with 2 keys for Smoking Brown Bomber

Seller: http://backpack.tf/profiles/76561198108880110#!/compare/1482105600/1482192000

Buyer: http://backpack.tf/profiles/76561198061576062#!/compare/1482019200/1482105600

Should be used to update the Bomber

Cloud Crasher Mini:

Sold for Miami Nights L'Homme Burglerre (19) + 2 keys

Seller: http://backpack.tf/profiles/76561198165752647#!/compare/1480809600/1481155200

Buyer: http://backpack.tf/profiles/76561198062020811#!/compare/1480896000/1480982400

X = 21

Couldn't find any sales for higher

Sellers:

27 keys:

http://i.imgur.com/qFeSzGJ.png - 22 days

http://backpack.tf/u/76561198090956917

http://i.imgur.com/I8rXmZN.png - 1 month

http://backpack.tf/u/76561198090956917

http://www.tf2outpost.com/trade/28723629

Sales at:

17

20

21

26 (3x)

31

17 quicksold, excluding 17.

Sellers at 27 and the common B/O's for ~25-28 show that 31 is too high. Excluding 31.

Going with 20-26.