It's hard to settle on a price for this item since it hasn't been successfully sold yet and many people are trying to sell it for 2-3 ref, so i took the 3 lowest prices i could find to construct a range.

Selling for 1 ref

http://www.tf2outpost.com/trade/15636792 Unsold for 2 days.

http://www.tf2outpost.com/trade/15644998 Unsold.

http://www.tf2outpost.com/trade/15556960 "add you for the Haunted Scorched Skirt", never sold.

Selling for 1.22 ref

http://www.tf2outpost.com/trade/15675738 Unsold.

Selling for 1.33 ref

http://www.tf2outpost.com/trade/15563579 Unsold 5 days.

http://www.tf2outpost.com/trade/15679956 Unsold.

http://www.tf2outpost.com/trade/15687686 Unsold.

Any proof of solds or successful buyers will help.