Proof below. 7 month-old price.

Definitely wouldn't be able to get one for 3

Sales:

http://www.tf2outpost.com/trade/16242435

-bought his for 3 buds+8 keys

-buyer's bp:

http://backpack.tf/id/76561198023624251?time=1386403200 3 buds+8 keys+42 wraps

http://backpack.tf/id/76561198023624251?time=1386576000 panama+4 keys+38 wraps

-~3.4 buds

-he was selling wraps during the time for keys: http://www.tf2outpost.com/trade/15959321

http://www.tf2outpost.com/trade/15246718

-b/o of 3.7 buds

-seems to have sold for max+smoking swagman (outdated)+s. yer: http://www.tf2outpost.com/trade/16531741 + http://www.tf2outpost.com/trade/16110120 + http://www.tf2outpost.com/trade/16070235

-~3.3 buds

http://www.tf2outpost.com/trade/14928983

-b/o of 3.5 buds

-sold for phos gonzilla=2.3 buds, outlier, sometimes people really overvalue new effects, look at his previous offer

-notable offers:

3 buds+sf ax=3.3

http://www.tf2outpost.com/trade/14721731

-sold for 3 buds+sweets (let's just say 5 since I can't tell)=~3.3 buds

-regardless it's probably within my range

http://www.tf2outpost.com/trade/16787925

-quicksold for 3 buds within a day

-buds seen here: http://www.tf2outpost.com/trade/16790726 buyer isn't in history, but he did have it as they came from his vivid flamenco sale: http://www.tf2outpost.com/trade/16784189

Current trade:

http://www.tf2outpost.com/trade/16287903

-notable offers:

smoking exec+keys=at least 3.2

ge stuntman (never priced)+1 bud+16 keys=4, clear outlier higher than past b/os and can't use stuntman

3 buds rejected, went up to 3.5 buds

bubbling muffs=3.4

lantern snaggle=3.1

aces marauder+5 keys=3.3

cauldron nappers (very outdated)=3.1

Sales: 2.3, 3, 3.3, 3.3, 3.4

I don't have much between 3 and 3.3, so I'm just going with 3.3-3.4 based on sales, with some offers around there. Impossible to get one for 3 buds pure though. Overpay and original prices used.