2 months old and only 1 on the market

http://www.tf2outpost.com/trade/10479504

4 buds (twice)

Clean Black Voodoo+3 buds+$20~4.5 buds

Eerie Ballcap+12 keys~3.8 buds

Ghost Milkman+bills~3.7 buds

Vivid Tyrant~3.9 buds

Orb Fire Beak+1 buds+10 keys~3.9 buds

Orb Fire Beak+Steaming Tricorne+10 keys~3.9 buds

Burning Bonk Helm+16 keys~4.8 buds

He send and copy a chat of some guy offer him 5.2 buds in keys

http://www.tf2outpost.com/trade/10815287 <--- my trade

Storm Bonk Boy+1 buds(he added me and show in trade)~4.2 buds

I sold for 74 keys+S.krit~5 buds http://imgur.com/tMTHsmJ

Overall, I choose 4 buds is the low end as there are 2 offer of 4 pure and 2 offer near there. As for the high end, I choose 5 buds because that is the recent sale