Buy.com has the Aliph JawBone 2 Wireless Bluetooth Headset w/ Noise Assassin Technology - Silver (new OEM in poly-bag) for $45 + $0 shipping = $45 shipped
. This headset boasts revolutionary noise cancellation capabilities, good enough to use while walking through a construction site. Here is the official site
with a video, and here's our review
of this goodie.