Sold for 100 keys:

http://www.tf2outpost.com/trade/26312478

http://backpack.tf/profiles/76561198045934534?time=1436684400 (July 12th)

http://backpack.tf/profiles/76561198045934534?time=1436770800 (July 13th)

http://backpack.tf/profiles/76561198045934534?time=1436684400&compare=1436770800

100 keys

Sold for duped Purple Energy Noble Amassment of Hats (57) + Dead Presidents Towering Pillar of Hats (30) + Memory Leak Birdcage (14) + 2 Earbuds (4):

http://backpack.tf/profiles/76561198056088462?time=1436598000 (July 11th)

http://backpack.tf/profiles/76561198056088462?time=1436684400 (July 12th)

http://backpack.tf/profiles/76561198056088462?time=1436598000&compare=1436684400

57 + (30 + 14) * .9 + 4 * 2 = 104.6 keys

~105 keys

Duped Purple Energy Noble Amassment of Hats:

http://backpack.tf/vote/id/55bac2e2ba8d88b81a8b466f

Sold for Frostbite Frickin' Sweet Ninja Hood (110):

http://www.tf2outpost.com/trade/26340465

http://backpack.tf/profiles/76561198056088462?time=1436079600 (July 5th)

http://backpack.tf/profiles/76561198056088462?time=1436166000 (July 6th)

http://backpack.tf/profiles/76561198056088462?time=1436166000&compare=1436079600

Buyout of 100 keys

Histories are a bit weird.

Frostbite Frickin' Sweet Ninja Hood:

http://backpack.tf/vote/id/55ab802cba8d888b3e8b4635

Sold for cash?

http://www.tf2outpost.com/trade/26285567

http://backpack.tf/profiles/76561198098768007?time=1435647600 (June 30th)

http://backpack.tf/profiles/76561198098768007?time=1435734000 (July 1st)