HiFiMan offers its HiFiMan Edition S White Lightning Open/Closed-Back Headphones for $149 with free shipping. (Amazon charges the same; B&H Photo Video charges the same but is on backorder.) That's $100 off and the lowest total price we've seen. Features include 50mm dynamic drivers, asymmetrical ear cups, an Android/iOS in-line cable, 18-ohm impedance, and 15Hz to 22kHz frequency response.