VM Innovations offers the Sennheiser RS 220 Wireless Headphones with Docking Station for $499.99. Coupon code "RSEN14" cuts it to $279.99. With free shipping, that's $20 under our mention from three days ago and the lowest total price we've seen. (It's a current low of $20, although most merchants charge closer to $400.) The headphones feature Direct Sequence Spread Spectrum technology and a frequency response of 16-22kHz. The docking station has optical and coaxial digital audio inputs and a pair of analog RCA jacks.