The Bose Frames Alto Audio Sunglasses normally list for $169, but you can get a refurbished pair for $99 with free shipping at Bose. The lowest price we found for a new or used pair anywhere else is $155.99. These sunglasses have Bose speakers and microphones hidden in the frames. They can be paired with the Bose app for audio navigation and other augmented-reality audio features. They also have interchangeable lenses that are currently marked down by 50% at Bose. Sales tax is charged in most states.