The first hat unusual I unboxed.

Sale 1:

https://backpack.tf/profiles/76561198064729879#!/compare/1520121600/1520553600

https://backpack.tf/profiles/76561198153417214#!/compare/1520467200/1520553600

Sold for 10 keys + Spec KS Sniper Kit(1.79) + Bolted Bushman(0.04)

Total is 11.83 keys

Sale 2:

https://backpack.tf/profiles/76561198113084770#!/compare/1520640000/1520726400

https://backpack.tf/profiles/76561198118700371#!/compare/1499040000/1520726400

Sold for Miami Sober(11.5) + 2 keys + Strange Hermes

Hermes has QB at around a key, using that.

Total is 11.5 + 2 + 1 = 14.5 keys

Sale 3:

https://backpack.tf/profiles/76561198286233598#!/compare/1521676800/1521763200

https://backpack.tf/profiles/76561198382654640#!/compare/1521676800/1521763200

Sold for Miami Warming Wear (ref was not part of trade)

Warming Mini:

https://backpack.tf/profiles/76561198327078449#!/compare/1519776000/1519862400

https://backpack.tf/profiles/76561198255457925#!/compare/1519776000/1519862400

Sold for 11 pure

Only traceable sale i can find, going with 11.

Sale 4:

https://backpack.tf/profiles/76561198273866103#!/compare/1517529600/1517616000

https://backpack.tf/profiles/76561198210071593#!/compare/1517356800/1517616000

Sold for DBD Grenadier's Cap(23) + Coldsnap coat + Movember

Total is 24.09 keys

Sale 5:

https://backpack.tf/profiles/76561198210071593#!/compare/1517961600/1518048000

https://backpack.tf/profiles/76561198297167809#!/compare/1517961600/1518048000

Sold with 3.24 keys in sweets for Tesla Titanium Pillar(23)

Total is 19.76 keys

Total sales are at 11, 11.83, 14.5, 19.76, 24.09

Seller at 14 counters higher than 14,

taking 11 - 14 keys (14 from rounding down 14.5)