Walmart offers the Ematic Wireless Headphones and Transmitter, model no. EH156, for $3. Opt for Site-to-Store pickup to avoid the $4.97 shipping charge. That's $6 under our mention from three weeks ago and the lowest total price we've seen. (It's a current low by $6.) This set is compatible with PCs and MP3 players and features a wireless transmitter with a range of 90 feet, FM radio, and a built-in microphone.