Sale #1:

https://backpack.tf/profiles/76561198051402119#!/compare/1545436800/1545523200

Sold with a Duped Steaming Professional's Panama (9 keys) for a Haunted Ghosts Larrikin Robin (18 keys)

Minis:

No sale for duped, sadly. Going with the only recent Professional's Panama sale:

Steaming Professional's Panama:

https://backpack.tf/profiles/76561198191617673#!/compare/1544745600/1544918400

https://i.imgur.com/pcuEkEa.png

sold for $22.51 on SCM

$22.51 x .87 = $19.58

$19.58 / $2.18 = ~9 keys

This is my first unusual suggestion in a few years, feedback appreciated.