Proof below.

Only a few recent traceable sales.

Sales:

http://www.tf2outpost.com/trade/14964914

-b/o of 7.5 buds

-hallmark+logo snaggle (1.8 very outdated), bought ge tyrolean (6.25)+lime mask: http://www.tf2outpost.com/trade/14925072

-4.5 buds, no overpay as offered

http://www.tf2outpost.com/trade/14887219

-b/o of 10 buds

-bought this stormy tc: http://www.tf2outpost.com/trade/14950530

-5.7 buds (wasn't outdated during sale)

http://www.tf2outpost.com/trade/15130597

-b/o of 10 buds

-sold for kill a watt titanium pillar=~4.9 buds

Current trade:

http://www.tf2outpost.com/trade/15197544

-offer of kill a watt pillar+5 keys=~5.2 buds

Sales: 4.5, 4.9, 5.7

These are all the recent sales I could find. Unusual overpay and original prices used.