Sale 1:

Sold for Molten Mallard Pom-Pommed Provocateur (Mini at 30 below) + 2 keys

http://www.tf2outpost.com/trade/28644329 - No B/O here

Seller: http://backpack.tf/profiles/76561198011321852#!/compare/1482019200/1482105600

Buyer: http://backpack.tf/profiles/76561198304398875#!/compare/1482105600/1482192000

X = 32

Sale 2:

Sold for Cloud 9 Modest Metal Pile of Scrap (30) + 1 key

No outpost

Seller: http://backpack.tf/profiles/76561198050062763#!/compare/1480291200/1480377600

Buyer: http://backpack.tf/profiles/76561198074377688#!/compare/1480291200/1480377600

X = 31

Sale 3:

Sold for 27 keys

http://www.tf2outpost.com/trade/28575904 - B/O of 27

Seller: http://backpack.tf/profiles/76561197963500354#!/compare/1477958400/1478044800

Buyer: http://backpack.tf/profiles/76561198169762923#!/compare/1477872000/1478044800

X = 27

Sale 4:

Sold for Vivid Plasma Texas Ten Gallon

No outpost

Seller: http://backpack.tf/profiles/76561198103038390#!/compare/1478563200/1478649600

Buyer: http://backpack.tf/profiles/76561198087962998#!/compare/1478563200/1478649600

Might be better to update the Ten Gallon with this sale, to prevent creating an unnecessarily large range, and due to the lack of B/O here.

Sale 5:

Sold with 15 keys for Hellish Inferno Boston Breakdance

Seller: http://backpack.tf/profiles/76561198219980724#!/compare/1478736000/1478822400

Buyer: http://backpack.tf/profiles/76561198216561389#!/compare/1478736000/1478822400

Should be used on the breakdance (might be a bit high though)

Sale 6:

Sold with a key for Dead Presidents Belgian Detective

Seller: http://backpack.tf/profiles/76561198169762923#!/compare/1478304000/1478390400

Buyer: http://backpack.tf/profiles/76561198219980724#!/compare/1478304000/1478390400

Should definitely be used on the Detective. That think looks quite overpriced.

Sale 7:

Sold for Cool Minimal Wear Flower Power Revolver

Seller: http://backpack.tf/profiles/76561198074377688#!/compare/1480291200/1480377600

Buyer: http://backpack.tf/profiles/76561198011321852#!/compare/1480291200/1480377600

Should be used to price the revolver

Mallard Pom Mini:

http://backpack.tf/suggestion/5869f3770e2cad5d36338abd

Sellers:

31 keys:

http://i.imgur.com/oE2CykX.png - 2 months

http://backpack.tf/u/76561198087962998

Sales at:

27

31

32

Going to shorten the high-end to 31, due to the seller at 31 going 2 months old. There's also the possibility that the seller in the first sale had a B/O at or lower than the hat's current price, also.

Going with 27-31