Sold this hat very recently.

I apologize if this suggestion is a bit sporadic.

Sale #1

- 1:1 for a Cloudy Moon Le Party Phantom (10)

- Current owner's Outpost trade: http://www.tf2outpost.com/trade/21475010

- Proof: Between dates traded (July 12-13) seller's backpack increased by exactly 1,403 ref in value, implying a 1:1

- Value factoring overpay (*.9) ≈ 9 buds

Sale #2

- Anti-Freeze Team Captain (34) + Hong Kong Cone for a Chiroptera Venenata Crone's Dome (44)

- Proof: http://www.tf2outpost.com/trade/17324115

- Basic algebra gives us the Cone's value in this trade, ≈ 10 buds

Sale #3

- I sold mine for a Chiroptera Venenata Towering Titanium Pillar of Hats (9.6) + a Searing Plasma Dead Cone (1.6)

- Proof: http://puu.sh/aWX3o/12a89148c9.png

- Value factoring overpay (*.9) ≈ 10 buds

Therefore, I feel that 9-10 buds is an appropriate range.