Tightening the range. Starfire.

http://backpack.tf/item/5191922552

Sale 1) Sold for 26 Keys

http://backpack.tf/profiles/76561198057412106#!/compare/1488240000/1488326400

Sale 2) Sold for an Orbiting Planets Triboniophorus Tyrannus + 12 Keys

http://backpack.tf/profiles/76561198085046840#!/compare/1488240000/1488326400

http://www.tf2outpost.com/trade/28808184 - Capped by the Buyout of 30 Keys

Sale 3) Sold for a Circling TF Logo Airdog (22 Keys) + Miami Nights Brim Full of Bullets (20 Keys)

http://backpack.tf/profiles/76561198043594322#!/compare/1488240000/1488326400

http://www.tf2outpost.com/trade/28808266 - Capped by the Buyout of 40 Keys

Sale 4) Sold for 18 Keys + ~1 Key in Items

http://backpack.tf/profiles/76561198120467518#!/compare/1488499200/1488585600 - Buyer's Backpack

Low Outlier.

Sale 5) Sold for 18 Keys + Stormy Storm Napper's Respite (16 Keys)

http://backpack.tf/profiles/76561198120467518#!/compare/1490486400/1491264000

18 + 16 = 34 Keys

Napper's Mini

http://backpack.tf/profiles/76561198058285028#!/compare/1491004800/1491091200 - Sold for 16 Keys

Sale 6) Sold for a Cloud 9 Burning Bandana (26 Keys)

http://backpack.tf/profiles/76561198220720536#!/compare/1491091200/1491177600

Bandana Mini

http://www.tf2outpost.com/trade/28887813 - 1 Week Unsold at 26 Keys

Sale 7) Sold + Strange Spec KS Pan (~6 Keys) for a Duped Kill-a-Watt Gibus (55 Keys)

http://backpack.tf/profiles/76561198093765664#!/compare/1491091200/1491177600

http://www.tf2outpost.com/trade/28857864 - Capped by the Buyout of 38 Keys

Gibus Mini

http://backpack.tf/profiles/76561198018719204#!/compare/1491091200/1491177600 - Sold for a Roboactive Ye Oiled Baker Boy (55 Keys)

Sale 8) Sold for a Haunted Ghosts Brigade Helm + ~5 Keys of Items

http://backpack.tf/profiles/76561198087957579#!/compare/1491091200/1491264000

Fits in the range.

Brigade Mini

http://imgur.com/a/pf5Ed - Worth less than 30 Keys. First 2 are Duped.

http://backpack.tf/item/952317836

http://backpack.tf/item/5160007262

Cutting off the 2 lower sales at 26 and the 2 higher ones at 38 and 40. Sale 8 falls within this range.

Plus, the median value is roughly the same.