Dead Presidents A Brim-Full of Bullets

New price: 15 keys

[proof below]

SALE #1 = invalid

https://backpack.tf/profiles/76561198181683862#!/compare/1512345600/1512432000

Likely quicksold and then used the keys to buy the Ambassador.

SALE #2 = invalid

https://backpack.tf/profiles/76561198403902482#!/compare/1516060800/1516147200

Better used there.

SALE #3 = invalid

https://backpack.tf/profiles/76561198203443358#!/compare/1516147200/1516233600

Sold in a bulk deal for a Neutron Star Nasty Norsemann to Bird. Later I quickbought the Brim off Bird.

SALE #4 = 15 keys

https://backpack.tf/profiles/76561198091502579#!/compare/1516406400/1516492800

https://gyazo.com/4cc311d4c59002a2651359327cf5f343

http://www.tf2outpost.com/trade/29523018 - B/O 15 keys

Sold for a Hellish Inferno Taunt: Results Are In (open suggestion at 15) + sweets (7-8) = 22 keys. Capping at B/O.

SUMMARY

Sales: 15 keys

Sellers: 15 keys

https://gyazo.com/27af178ae1f85da950a2ae39c88e6521

Going with 15 keys.