Home Amazon Goldbox deals Amazon: ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem Amazon Goldbox deals Amazon: ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem By ARCOM - 3 February 2017 288 0 SHARE Facebook Twitter Amazon Goldbox Deal: List Price: $59.99 Deal Price: $79.00 You Save: $0.00 (0%) ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem Expires Mar 1, 2017