Groupon offers the Motorola Buds SF500 Bluetooth Stereo Headset in White, model no. 60-5672-05, for $20 with free shipping. That's $10 under last October's mention, a low by $7, and tied with the best price we've seen for a new unit. They feature an operating range of 150 feet, 10 hours' talk time, and noise cancellation. Deal ends June 12.