I have calculated unusual overpay by using the lower end of the hats prices.

I used the original prices for all the prices

Sold for a scorching hound dog + 2 buds + s.f huntsman (~7.2 buds)

thanks to blind polar beat for pointing this out.

http://backpack.tf/id/76561197999127845?time=1383289200 before

http://backpack.tf/id/76561197999127845?time=1383375600 after

Sold for a cloudy moon lucky shot (~7.3 buds)

http://backpack.tf/id/76561198076213238?time=1382252400 before

http://backpack.tf/id/76561198076213238?time=1382425200 after

http://www.tf2outpost.com/trade/15209302 sale with a dbd panama (unpriced)

http://www.tf2outpost.com/trade/12480255 sale with a anti-freeze tin capotain and pure (unpriced)

Notable offers

http://www.tf2outpost.com/trade/15209302

Ge tyro + 1 bud pure ( ~7.1 buds)

Beams ze goggles + burning geisha ( ~7 buds )

Burning jeepcap (~6.5 buds)

http://www.tf2outpost.com/trade/15364870

Someone else offered a cloudy moon lucky shot (~7.3 buds )

burning jeepcap guy still wants it (~6.5 buds )

http://www.tf2outpost.com/trade/15241132