Walmart offers the refurbished Netgear CM500 DOCSIS 3.0 Cable Modem in Black for $29.99. Choose in-store pickup to avoid the $5.99 shipping fee. That's tied with our May mention and the best price we could find for a new one today by $32. Buy Now Tips It's unclear if a warranty is included Features up to 680MB/s 16 download channels, 4 upload channels certified for Comcast Xfinity, Time Warner Cable, Cox, Charter, and more Model: Cm500-100Nar