Considering only clean (this one is dupped http://www.tf2outpost.com/trade/17662860 as most of the rest)

Sold

1) http://www.tf2outpost.com/trade/17564984 . The set has been sold to Tag for 280$ + 1 bud + unusual Gym Rat (Green energy) + ~5 keys worth sweets

Australlium flame thrower = G. E. Gym Rat: Axtinguisher = 1 bud, s f flare gun + miscs = those sweets, so Merry = 280$ (bud = ~37)/// totally 7.5 buds for only hat

2) http://www.tf2outpost.com/trade/17998336 Sold for 116 keys pure + strange festve flare gun with parts (like 4 keys), so a bit over than 6 buds.

3) http://www.tf2outpost.com/trade/16446544 1 Clean Max's Head (Level 16), 1 Bud + 40keys = ~6 buds

Offers:

£160 http://www.tf2outpost.com/trade/17207766 = 7,2 buds

Miami Flamenco + 10 keys http://www.tf2outpost.com/trade/18055415 ~7 buds

Roboactive Trilby http://www.tf2outpost.com/trade/18055415 = 6.1 buds