Proof below.

Sales:

http://www.tf2outpost.com/trade/13953923

-bought terror watt brigade+lime filamental+lime pyrotechnic=~4.3 buds taking mid prices

http://www.tf2outpost.com/trade/13858911

-added 1 bud to buy ghosts fez=3.8 buds, no overpay

http://www.tf2outpost.com/trade/14845162 (relist)

-cosa+sf sticky, sold for kill a watt hustler's (4.6)=~3.5 buds

http://www.tf2outpost.com/trade/15181021

-b/o of 5 buds

-cosa+dbd hive, bought this kill a watt beak (unpriced): http://www.tf2outpost.com/trade/15309468

Current trades:

http://www.tf2outpost.com/trade/15311242

-b/o of 5 buds, selling for ~4 buds

-just gave it to new owner below, doesn't seem to have gotten anything

http://www.tf2outpost.com/trade/15335699

-wants 4 buds

Sales: 3.5, 3.8, 4.3

All sales form suggested range. Unusual overpay and original prices used.