This deal has ended.
Likely only for a few hours, Amazon has the Plantronics Discovery 925 Bluetooth Headset on sale for only $39.99, matching the all-time low (you may need to find Amazon.com's listing under the column on the right labeled "More Buying Choices). Most stores sell this for $80 to $100! Shipping is free with no sales tax (except KS, KY, ND, NY, WA). Personal note: I have one of these and love it -- the best Bluetooth headset I've used. It's tiny plus the case has a battery built into it so it charges when you're on the go.