Proof below (4 sales).

Sales:

http://www.tf2outpost.com/trade/15011684

-fez+sweets (bouffant+scout shades), bought eerie jefe=~4.7 buds, no overpay as offered

http://www.tf2outpost.com/trade/15039846

-b/o of 7.6 buds

-bought misty beret=~3.8 buds, no overpay as offered

http://www.tf2outpost.com/trade/14877980

http://www.tf2outpost.com/trade/14665876

-b/o of 10 buds

-seems to have sold for c. bubbles milkman: http://www.tf2outpost.com/trade/14740088

-~3.4 buds

http://www.tf2outpost.com/trade/14656916

-bought dbd slouch here: http://www.tf2outpost.com/trade/14614494

-3.5 buds

Current trades:

http://www.tf2outpost.com/trade/15117237

-b/o of 7-8 buds in unusuals

http://www.tf2outpost.com/trade/14690797

-b/o of 8 buds

-offer of (duped) burning noir

Sales: 3.4, 3.5, 3.8, 4.7

The 4.7 sale may seem a little high, but it was very recent and it's not too far off.

All sales form the suggested range.