Sellers:

https://marketplace.tf/items/152;5;u19

http://www.tf2outpost.com/trade/28904103

http://www.tf2outpost.com/trade/29062628 - 1 at $130 = 62 keys (1 month), 1 at $150 = 71 keys (3 weeks)

Sales:

http://www.tf2outpost.com/trade/28800502

http://backpack.tf/profiles/76561198093867070#!/compare/1491782400/1491868800 - sold with 2 keys for duped Orbiting Planets Team Captain + Sulphurous Defiant Spartan = 65 keys b/o

http://backpack.tf/profiles/76561198066434918#!/compare/1491696000/1491868800 - sold for Molten Mallard Tyrant's Helm = 67 keys

http://backpack.tf/profiles/76561197976043915#!/compare/1491091200/1491177600 - bulk

http://www.tf2outpost.com/trade/28892551

http://backpack.tf/profiles/76561198002757046#!/compare/1493164800/1493251200 - sold for Circling Heart Honcho's Headgear + Hellish Inferno Taunt: Soldier's Requiem = 67 keys

http://backpack.tf/profiles/76561198344429943#!/compare/1492819200/1492905600 - sold for Vivid Plasma Charmer's Chapeau = 67 keys

http://backpack.tf/profiles/76561198011321852#!/compare/1491782400/1491868800

http://backpack.tf/profiles/76561198344429943#!/compare/1491782400/1491868800 - sold with 5 keys for duped Scorching Flames Familiar Fez + Potassium Bonnett = 65 keys

http://backpack.tf/profiles/76561198057740823#!/compare/1489104000/1490572800 - sold for 32 keys + ?

Mini's:

Sulphurous Defiant Spartan:

http://backpack.tf/profiles/76561198012510479#!/compare/1490140800/1490918400 - ?

http://www.tf2outpost.com/trade/28837261

http://backpack.tf/profiles/76561198068450551#!/compare/1489795200/1489968000 - sold for 40 keys

http://backpack.tf/profiles/76561198068450551#!/compare/1489708800/1489795200

http://backpack.tf/profiles/76561198119634686#!/compare/1489708800/1489795200 - ?

http://backpack.tf/profiles/76561198028179754#!/compare/1489276800/1489363200 - bulk

Molten Mallard Tyrant's Helm:

http://backpack.tf/profiles/76561198066434918#!/compare/1492128000/1492214400 - bulk

http://backpack.tf/profiles/76561198090956917#!/compare/1491436800/1491523200 - sold for Misty Skull Sergeant's Drill Hat = 73 keys

http://www.tf2outpost.com/trade/29006722 - b/o: 60 keys

taking 60-73 keys

Circling Heart Honcho's Headgear:

http://backpack.tf/profiles/76561198002757046#!/compare/1493596800/1493683200 - sold for 35 keys

Vivid Plasma Charmer's Chapeau:

http://backpack.tf/profiles/76561198344429943#!/compare/1493683200/1493769600 - sold with Bubbling Vive La France for Voltaic Hat Protector Captain Space Mann = 67 keys

duped Scorching Flames Familiar Fez:

http://backpack.tf/profiles/76561198104917583#!/compare/1491782400/1491868800 - sold for Skill Gotten Gains Taunt: Square Dance = 48 keys

seems low so taking 48-70 (70 based on sellers)