The Peace Brigade. Literally.

http://backpack.tf/item/147833760

Sale 1) Sold for 17 Keys

http://backpack.tf/profiles/76561198142055566#!/compare/1479945600/1480032000 - Buyer's Backpack

Sale 2) Sold for a Vivid Plasma Tippler's Tricorne

http://backpack.tf/profiles/76561198142055566#!/compare/1480204800/1480291200

Fits in the range.

Sale 3) Sold for a Killstreak Australium Knife (~18 Keys)

http://backpack.tf/profiles/76561198072587653#!/compare/1483488000/1483574400

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http://backpack.tf/item/161179296

Sale 4) Sold for an Orbiting Fire L'homme Burglerre (~20 Keys)

http://backpack.tf/profiles/76561197993989727#!/compare/1479945600/1480032000

Whether I take 19 or 20 Keys, this sale fits in the range.

Burglerre Mini

http://imgur.com/a/Msaaq - Nearly 1 Month Unsold at 20 Keys

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http://backpack.tf/item/1131734403

Sale 5) Sold for a Bubbling Killer's Kabuto (20 Keys)

http://backpack.tf/profiles/76561198014811898#!/compare/1482796800/1482883200

http://www.tf2outpost.com/trade/28752384 - 1 Week Unsold at 20 Keys

Pulled up on your b****, tell your man I'm sorry. Hundred on my wrist, jumpin' out the 'rari.

Ooh, she hit the splits, she knows how to party. When I'm with my clique, we know how to party.

https://www.youtube.com/watch?v=Z9eMk051dYg