Sold for Steaming Big Country, Smoking Prancer's Pride and S. Grenade Launcher:

http://www.tf2outpost.com/trade/15602638

(Big Country = 12, Prancer = 13, Launcher = 4)

(~1.5 buds)

Sold for 45 keys + Sweets

http://www.tf2outpost.com/trade/15674152

(~2.4 buds)

The other suggestion states that they sold theirs for a Phosphorous Magistrate's Mullet.

The original suggestion for the Mullet is a whole load of indecipherable crap, and it's depressing it was even passed.

http://backpack.tf/vote/id/51b9f031ba25368616000014

He finally, in the discussion part of his suggestion, said that the unusual he sold the Mullet for was a Stormy Storm Brainiac (back when it was 3.1-3.4 buds). That would make the Brainiac ~2.6 w/ overpay, making the Mullet 2.6. And since the Topi was sold for the Mullet, it would make the previous suggestion for the Kill-a-Watt Sola Topi helpful to my suggestion as the Mullet would fit in to the range (technically). Someone, please make a suggestion for the Mullet XD