Crutchfield offers the Sennheiser Digital Wireless Headphones, model no. RS180, for $199.99 with free shipping. (Emusic Enterprise via Amazon and B&H-Photo Video charge the same.) That's tied with our mention from two weeks ago and the lowest total price we could find by $20. They feature a transmitter that doubles as a charging cradle and docking station, and a frequency response of 18Hz to 21kHz.