http://www.tf2outpost.com/trade/12007479 - Retracted offer of Stormy Tyrolean + 1 bud (~3.1 buds)

http://www.tf2outpost.com/trade/11830931 - Sold Fruit + Time Warp Fed for Burning Noble (Can't really estimate this as there isn't a price for Fed)

http://www.tf2outpost.com/trade/11886359 - Sold for Sulp Cockswain (Once again, hard to estimate but I'd say it equates to at least 3 buds)

http://www.tf2outpost.com/trade/12184868 - Sold for Planets Swagman + 1.5 pure (~2.4 buds)

http://www.tf2outpost.com/trade/11936880 - Offer of 3 buds, Offer of Burning Nano + sweets (~3.1+ buds)

The OP in the above trade bought it for a SF Scatter (~2.5 buds)

Offers and sales seem to pretty consistently fall between the 2.4-3.1 range.