Dell Home, via its Members Purchase Program, offers the Sony ZX Series Noise-Canceling Headphones bundled with a $25 Dell Gift Card for $47.99 with free shipping. Assuming you'll use the gift card that's the lowest price we could find by $11, although we saw them for $3 less a month ago. They feature a battery life of up to 80 hours on a single AAA (included).

Note: Dell's MPP is available to select groups, including students, government employees, military (active and retired), credit union members, and health care workers.