1 of 5, 2 on the market

Counter-suggestion, I should reckon that a single sale doesn't reflect all of the past sales of a 2 months old item with 5 copies.

Overpay is applied.

http://www.tf2outpost.com/trade/12705343

Sold for a Vintage Bill's Hat (~1.9 buds)

http://www.tf2outpost.com/trade/12429050

Added a Blizzardy Sultan's (~15 keys) for an Anti-Freeze Frenchman's Beret (~3.2 buds)

~2.5 buds

http://www.tf2outpost.com/trade/12832149

Sold for a G.Energy Bombing Run (~1.7 buds)

http://www.tf2outpost.com/trade/12836256

Added a Planets Brown Bomber (~1.8 buds) for a G. Fetti Jefe (~2.7 buds)

~0.9 buds - outlier

Note that one of the first shakos has a very long history, and there's absolutely no trace of what the earlier listings were sold for. The last listed sale is much of an outlier, so it's not included in the range.