Walmart offers the Plantronics Gamecom 818 Wireless Stereo Headset
, model no. 203908-01, for $19.96
. Opt for in-store pickup
to dodge the $5.97 shipping charge. That's the lowest price we could find by $19. They feature a 40-foot range, 40mm drivers, 20Hz to 20kHz frequency response, and 13 hours of use per charge.