I was surprised at first that no one had done this, now I know why.

http://backpack.tf/profiles/76561198118917458#!/compare/1461542400/1462233600

http://imgur.com/iS9O0O4

Sold for Aces Noir(~18) + Bubbling Fed Fedora(~16) + 3 keys.

~37 keys.

Minis

Aces Noir ~18 keys.

http://backpack.tf/profiles/76561198119064425#!/compare/1460332800/1460419200

Sold for duped ghosts Noir ~19 keys

http://www.tf2outpost.com/trade/28104570 - My b/o was 18 keys for 4+ days.

Duped Ghosts Noir

http://imgur.com/xuXepe1 - buyer at 19 keys

Bubbling Fed Fedora ~16 keys

http://backpack.tf/profiles/76561198239218830#!/compare/1459900800/1459987200

Sold for KaW Stuntman + bills + ~1 key in items = ~17 keys, stuntman is outdated of course but the price shouldn't change much

http://imgur.com/JILEJ9U - Seller at 1 month for 16 keys, buyer at 12

~16 keys is probably about right

Only 1 recent sale and it isn't going anywhere. Minis should be pretty close, neither hats have easy to use sales.