Nice high end.

Sold for a Vivid Plasma Larrikin Robin(25 Keys) and a Haunted Sir Shootsalot(2 Keys)(27 Keys total)

http://backpack.tf/profiles/76561198148698438#!/compare/1470096000/1470528000

Sold for a Miami Nights Bear Necessities(26 Keys)(Item IDs match)

http://backpack.tf/profiles/76561198079679007#!/compare/1468540800/1468800000

Sold for an Australium Minigun(18 Keys) and an Australium Pro KS Axtinguisher(~8 Keys)(26 Keys total)

http://backpack.tf/profiles/76561198066195760#!/compare/1471132800/1471219200

Sales seem to fit, 26-27 Keys should be fine.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.