All credits to Inspector Lag, Lemons and Marty Birdman

Sale 1:

Sold for 16 keys pure

https://backpack.tf/profiles/76561198083134207#!/compare/1516147200/1516233600

Sale 2:

Sold for Duped Aces High Bubble Pipe (16?) + 2 keys = 18 keys

https://backpack.tf/profiles/76561198190498499#!/compare/1516233600/1516320000

https://backpack.tf/profiles/76561198082265337#!/compare/1516233600/1516320000

Bubble Pipe Mini:

Sold 1:1 for O. Fire Fed Fightin' Fedora (outdated)

https://backpack.tf/profiles/76561198190498499#!/compare/1515715200/1515801600

New sale:

https://backpack.tf/profiles/76561198312856060#!/compare/1516492800/1516838400 - Both unusuals and sweets for the Cone, Ushanka is outdated but even valuing at buyer price, this will cap at the 20 key B/O - http://www.tf2outpost.com/trade/29524175

Additionally, with JoXu's updated Bubble Pipe suggestion, your second sale here is also 20.

So, sales at 16, 20, and 20. Please re-suggest at 16-20.