Counter-suggestion to WoodenHouse's suggestion.

Sold for a Circling Hearts Federal Casemaker - 7.8*0.9 = 7 buds after overpay calculated

http://www.tf2outpost.com/trade/20127506

Sold for 5 buds pure + 13 jeys + white painted Essential Accessories (4 keys) = 6 buds as a Quicksale [OUTLIER]

http://www.tf2outpost.com/trade/20115669

Backpack of buyer before and after

Before:

http://backpack.tf/profiles/76561198033237796?time=1401606000

After:

http://backpack.tf/profiles/76561198033237796?time=1401778800

Sold for a Cloud 9 Virtual Viewfinder - 17*0.9 = 15.3 ~ 15 buds after overpay calculated. [Outlier]

http://www.tf2outpost.com/trade/19926189

Sold for a Secret Lid and a Blizz Sensei - 9*0.9 + 1.8*0.9 = 9,7 buds after overpay calculated.

http://www.tf2outpost.com/trade/20239664#latest

Mini-suggestion for the Lid further down.

So I guess I'll try and set the price to 7 - 9.7 buds.

This might be a wide range but I think it's better then having 7 - 15 or 9,7 - 15 buds.

Mini for the Lid:

Sold for a Disco Cannonball - 9 buds after overpay

http://www.tf2outpost.com/trade/20072105

All the other sales are either included hats that are outdated or to old to include.

I highly appreciate tips and any kind of critisism, so if you have any I appreciate if you post it