My first suggestion:

So I purchased this hat Feb 10th 2013 for 2 buds, original asking price was 2 buds, 1 unpainted bills.

I've been trying to sell this hat for last few weeks with various unusual offers http://www.tf2outpost.com/trade/9272805 and http://www.tf2tp.com/trade.php?trade=9245488 (i don't know if people can see the prices listed there, i don't using trade post that much).

I've finally sold for 2 pure (buying price) but struggled to get that value. I had a look at other trades currently on Outpost:

http://www.tf2outpost.com/trade/9764074 stating 2 buds value

http://www.tf2outpost.com/trade/9238912 c/o of 2 buds, b/o 2.6buds

http://www.tf2outpost.com/trade/9126874 main offers for Ushanka only are 2 pure/unusual overpay with Stormy Stormy pyromancers + sweets or the Untradeable V Conch so would have gifted text and lose value.

Couldn't find any on bazaar.tf and Trade post had this www.tf2tp.com/trade.php?trade=9272710 which appears to have been sold since then but i'm not sure what was paid for it.

Looking through outpost for people looking for this hat, its mainly caught up in the Quicksell trades, the most specific one is this http://www.tf2outpost.com/trade/9601181 which is actually the person who bought mine for 2 buds.

I've proposed this range as it is possible to get 2 buds for this hat and probably a bit higher but I do not feel that 2.4 is a possible price for this any longer. I would have liked to have sold for profit however i'm not the best trader so I was happy to break even.

If this isn't correct or thorough enough, please let me know, happy to take any feedback, just figured i'd suggest a price for something I've actually had a little experience with, thanks.