These high-tier hats are raising all the time.

Sale #1:

Sold for 92 keys + 58 CS:GO Keys

http://www.tf2outpost.com/trade/27171906

http://backpack.tf/profiles/76561198135178562?time=1446796800&compare=1446710400

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

Caps at 150 key B/O.

Sale #2:

Sold for Harvest Lucha (outdated) + 3 keys

http://backpack.tf/profiles/76561198085351777?time=1445410800&compare=1445583600

This sale would work perfectly for updating the Lucha.

Sale #3:

Sold for Ghosts Mining Light + C. Bubbles Mining Light

http://backpack.tf/profiles/76561198084990040?time=1442214000&compare=1444633200

Just looking at the values for each Mining Light this seems like an outlier. You can find better offers looking at any GE Modest trades.