Only 1 sale within 3 months. 3 exists and 1 of them isn't ever left from the unboxer's inventory.

Unsold:

http://www.tf2outpost.com/trade/21467591

I did the only sale:

http://www.tf2outpost.com/trade/23325970#latest

I Sold it for 10 keys + 1 Earbuds + 1 A Distinctive Lack of Hue paint can + Australium Ambassador after negotiating with the price even though I asked 4 Earbuds for it for start.

Proof of the sale:

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

http://i.imgur.com/Dm884rD.png

Buyer said he won't sell it. Here's the entire chat log about price negotiating and evidence:

http://i.imgur.com/61DAtjv.png

http://i.imgur.com/cghIm1B.png

http://i.imgur.com/c9waHZC.png

Price calculating: A Distinctive Lack of Hue (2.3 keys) + 10 keys = 12.3 keys and when calculating Earbuds as 16 keys:

12.3 / 16 = 0.77 Earbuds

Australium Ambassador (1.15 Earbuds) + 1 Earbuds + 0.77 Earbuds = 2.92 Earbuds, rounding to 2.9 Earbuds.