Monoprice offers its Monoprice Bluetooth Hi-Fi Over-the-Ear Headphones in White or Black for $48.92 plus $8.62 for shipping. That's $14 below our April mention, $149 off, and the lowest total price we could find. These headphones use a single 50mm woofer and three 13mm tweeters in each earpiece and feature a frequency response of 20Hz to 20KHz and 120dB sensitivity.