Was quite hard to track as most sales occured more than 3 months ago

Tough Guy's Toque Purple Confetti

Sellers:

http://www.tf2outpost.com/trade/23695496 22 keys

http://www.tf2outpost.com/trade/23517462 24 keys

http://www.tf2outpost.com/trade/24280779 24 keys

Solds:

Sold 1:

Backpack before: http://backpack.tf/profiles/76561198012038706?time=1415779200

backpack after: http://backpack.tf/profiles/76561198012038706?time=1415865600

Sold for a bubbling Hustler's Hallmark (1.2)

1.2 x 0.9 =

1.08 rounded up to

1.1

Sold 2:

backpack before: http://backpack.tf/profiles/76561198006363795?time=1415347200

backpack after: http://backpack.tf/profiles/76561198006363795?time=1415433600

Bought for a bubbling Magistrate's mullet + 4 keys

11 + 4 = 15

1.33 buds rounded down to

1.3

Sold 3:

Although Gifted it's the higher range of the sale thus I think it can be ignored

backpack before: http://backpack.tf/profiles/76561198092283672?time=1418112000

backpack after: http://backpack.tf/profiles/76561198092283672?time=1418284800

Sold for an aces high Desert marauder (1.65)

1.65 x 0.9 =

1.485 rounded up to 1.5

Mini on mullet:

backpack before: http://backpack.tf/profiles/76561198073902445?time=1418716800

backpack after: http://backpack.tf/profiles/76561198073902445?time=1418803200

Sold for 6 keys and a collector's huntsman (5keys) = 11 keys

Additional Proof:

http://www.tf2outpost.com/trade/23517462 - Got offered 17 keys a month ago buds were 14 keys so it's about 1.2 buds

http://www.tf2outpost.com/trade/24053832 - was initially offered an overclocked nanobalaclava + 6 keys (1.6 buds) though this was revoked.

http://www.tf2outpost.com/trade/23695496 - was offered terror-watt hard counter and a smoking big elfin

Due to the above additional proof I feel the first sale is a bit of an outlier, thus taking range from 1.3-1.5