For every rhyme I write, it's 25 to life.

Sale #1

Bulk sale for a Purple Confetti Tipped Lid

http://www.tf2outpost.com/trade/27479290

http://backpack.tf/profiles/76561198158459733?time=1448524800&compare=1448265600

Sale #2

Sold w/ ~1.5 keys worth of sweets for a Hunated Phantasm Copper's Hard Top (~26) + Nuts and Bolts Braniac Headpiece (~39.5)

http://www.tf2outpost.com/trade/27467484

http://backpack.tf/profiles/76561198158459733?time=1448179200&compare=1448265600

http://backpack.tf/profiles/76561198084927866?time=1448179200&compare=1448265600

((39.5 + 26) - 1.5) * .9 = 58 keys

Sale #3

Sold for a Death at Dusk Belgian Detective (~75)

http://www.tf2outpost.com/trade/27409309

http://backpack.tf/profiles/76561198084927866?time=1448006400&compare=1447920000

http://backpack.tf/profiles/76561198066701092?time=1448006400&compare=1447920000

75 * .9 = 67.5 keys

B/o constraint: 65 keys

Sale #4

Sold w/ a Professional Killstreak Medi Gun Kit (~21) for a Poisoned Shadows Helmet Without a Home (~40, mini below) + Green Confetti Modest Pile of Scrap (~45.5)

http://backpack.tf/profiles/76561198066701092?time=1446969600&compare=1446883200

http://backpack.tf/profiles/76561198161578022?time=1446883200&compare=1447056000

((40 + 45.5) - 21) * .9 = 58 keys ~> sale seems complicated, nonetheless it supports the low-end so I'm gonna leave it here

PS Helmet w/o a Home mini

Sold for 40 keys

http://www.tf2outpost.com/trade/27172690

http://backpack.tf/profiles/76561198049203293?time=1444719600&compare=1444806000

Conclusion:

Can't use sale #1 as it's a bulk sale for a much higher tier hat. 2 valid sales: 1 at 58 and 1 at 65; gonna go with a range of 58-65 keys.

Additional/Supportive and Counter Evidence is always appreciated.

Discovery out ヽ༼ຈل͜ຈ༽ﾉ