Bang & Olufsen's excellent H9i headphones are cheaper than ever at Amazon - The Verge
Amazon.com: Sony WH-CH510 Wireless Bluetooth Headphones with Mic, 35 Hours Battery Life with Quick Charge, On-ear Style, Hands-Free Call, Voice Assistant - Black: Electronics
Bluetooth headphones with 89,000 5-star Amazon ratings are somehow down to $26 – BGR