I had one, was trying to sell for 3.5 buds and for 1 entire week noone offered for it:

http://www.tf2outpost.com/trade/18404474

I made another trade and got a few offers, but nothing over the price, so i had to low the price to 2.5 buds, traded for a 2.5 buds unusual + sweets

http://www.tf2outpost.com/trade/18641921

Ended up trading it for another unusual + sweets, the other dude tried to sell it for 3.6 buds but only got a 2.9 buds unusual offer:

http://www.tf2outpost.com/trade/18794118

Ended up trading it for a robo unusual (unpriced) but he was selling it for 2.5 buds

http://www.tf2outpost.com/trade/18806815

Next guy tried to sell for 3.6 buds

http://www.tf2outpost.com/trade/18806508

Traded it for 3.3 buds with a guy who's now trying to sell it for 6 buds

http://www.tf2outpost.com/trade/18843157

So after 1 month the lowest value it had was 2.5 buds (still took me 2 weeks to get ride of it with that price), and the higher was 3.3 buds (by someone who was trying to make profit)