2 in existence (1 hasn't been traded yet)

Sale #1

http://backpack.tf/profiles/76561198165097434?time=1443423600 -> http://backpack.tf/profiles/76561198165097434?time=1443510000

Sold for DBD Milkman (outdated, history is matching on OP http://www.tf2outpost.com/item/440,4173027579,219,5 )

No double overpay : 41 keys low-end

Mini on the Milkman ~ 41 keys :

http://www.tf2outpost.com/trade/26939788 B/O 40 keys after a month

http://backpack.tf/profiles/76561198064869299?time=1442905200 -> http://backpack.tf/profiles/76561198064869299?time=1442991600

(27 + 17 + 3)*0.9 = 42 keys

Sale #2

http://www.tf2outpost.com/trade/26819107 B/O 50 keys

Sold for a clean Venenata Fez ( outdated ), can't exceed the B/O of 50 keys high-end

Mini on the Fez ~ 60 keys :

http://www.tf2outpost.com/trade/26980281 B/O 60 - unsold for 2 weeks

http://backpack.tf/profiles/76561198065601545?time=1443078000 -> http://backpack.tf/profiles/76561198065601545?time=1443423600

x = (37+37.5)*0.9 = 67 keys

Sale #3

http://backpack.tf/profiles/76561197985236586?time=1441954800 -> http://backpack.tf/profiles/76561197985236586?time=1442127600

Sold with a clean TF Headwarmer (outdated) for a PE AA

64 = x + 19 -> x = 45 keys

Mini on the HW ~ 19 keys :

http://backpack.tf/profiles/76561198033751590?time=1442473200 -> http://backpack.tf/profiles/76561198033751590?time=1442559600

Sold for Terror-Watt Bubble Pipe -> 18 keys after overpay

http://backpack.tf/profiles/76561198033751590?time=1441954800 -> http://backpack.tf/profiles/76561198033751590?time=1442473200

Sold for Ghosts Gatsby -> 20 keys after overpay

Any pertinent comments are welcome.