Sale #1:

http://i.imgur.com/HUcGkWg.png

http://www.tf2outpost.com/trade/28075438

http://backpack.tf/profiles/76561198063974617/#!/compare/1460937600/1461024000

Sold for:

100 keys

Roboactive Sergeant's Drill Hat (mini at 100)

Blizzardy Storm Mask of the Shaman (mini at 75)

Sunbeams Backbiter's Billycock (updated at 48)

100 + 100 + 75 + 48 = 323 keys

My buyout was 300 keys

I only had it up for sale for 3 days.

I also had some offers in the range but I didn't like the hats much:

http://imgur.com/a/cXtcy These are valued at > 300 keys

Sale #2:

Sold for 4.66 refined metal

http://backpack.tf/profiles/76561198130682435/#!/compare/1460592000/1460678400

Roboactive Sergeant's Drill Hat

Sold for Duped Burning Milkman (100)

http://backpack.tf/profiles/76561198110190436/#!/compare/1459987200/1460160000

Sold for Duped Cloudy Moon Honcho's (145)

http://backpack.tf/profiles/76561198063974617/#!/compare/1460332800/1460419200

Previous seller's buyout was at 100 keys:

http://www.tf2outpost.com/trade/27966790

Sales at 100 and 145, with a buyout at 100 keys. Should probably be around 100 keys.

100 keys

Blizzardy Storm Mask of the Shaman:

http://www.tf2outpost.com/trade/27927598

Sold for Duped Stare From Beyond Vintage Merryweather (50) + ~50 keys in strange items + 9 keys

Merry had an offer of 50 keys here: http://www.tf2outpost.com/trade/27861928

50 + 50 + 9 = 109 keys

Should safely cap at buyout of 75 keys

Duped Cloudy Moon Honcho's:

Sale #1:

Sold for Scorching Bonk Helm

http://backpack.tf/profiles/76561198008795422/#!/compare/1460592000/1460678400

Bonk Helm has a seller at 65 keys: http://www.tf2outpost.com/trade/28087583

There's probably something wrong with this sale if it's less than half of the value of the Honcho's...

Sale #2:

http://www.tf2outpost.com/trade/28034204

Sold for Harvest Chieftain's (147.5) + 10 keys

http://backpack.tf/profiles/76561198005299438/#!/compare/1459987200/1460073600

147.5 + 10 = 157.5 keys; caps at seller's buyout of 145 keys

Duped Burning Milkman:

I know from my experience these are generally ~80-100, but let's look at current sellers/sales:

Seller at 100 keys for 3 months: http://i.imgur.com/HwDcA5p.png

Seller at 109 keys for 1 week: http://www.tf2outpost.com/trade/28047292

Seller at 110 keys for 1 month: http://www.tf2outpost.com/trade/27977379

Seller at 110 keys for 2 months: http://www.tf2outpost.com/trade/27810821

Sale #1:

http://backpack.tf/profiles/76561198147356475/#!/compare/1459555200/1459728000

http://www.tf2outpost.com/trade/28007328

Sold for Blizz Juju (23) + Poisoned Shadows Ol' Geezer (63) + Magnetic Hat Protector A Head Full of Hot Air (22) + Blizzardy Storm Napoleon Complex (16)

http://www.tf2outpost.com/trade/28041435

PS Ol' Geezer sold for Stare Reggae (~60) + minor items - http://backpack.tf/profiles/76561198147356475/#!/compare/1460073600/1460160000

Should be stable-ish.

23 + 63 + 22 + 16 = 124 keys

Sale #2:

Sold for Peace Bonk Boy (~55) + Bubbling Soviet (18) + Duck Tossle (~75)

http://backpack.tf/profiles/76561198164788289/#!/compare/1458457200/1458543600

Not going to mini all those but should easily be over 100 keys.

Sale #3:

Sold with ~20 keys in items for an Anti-Freeze Jefe (140)

http://backpack.tf/profiles/76561198162120088/#!/compare/1454054400/1454140800

140 - 20 = 120 keys

I don't know how the Duped Burning Milkman sells for around regular price consistently... I'll use the 3 month buyout at 100 keys for this mini.

100 keys