2 month old price!

Sale 1: (sale from previous suggestion is still valid; credits to Julia)

Sold for 150 keys

http://imgur.com/a/5bwYi

Sale 2:

Sold for 179 keys

http://www.tf2outpost.com/trade/27868128

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

Sale 3: (not using this sale, can be used to update either of the hats instead)

Sold with Hearts Braniac Headpiece for Hearts HWNN

http://www.tf2outpost.com/trade/27932618

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

Notes:

One currently on the market at 200 keys: http://www.tf2outpost.com/trade/27932816

Conclusion:

Two valid sales at 150 keys and 179 keys. Taking a final range of 150-180 keys for neatness.

Feel free to support/counter my suggestion!