Newegg has the Recertified LINKSYS CM100-RM Ethernet Port Cable Modem with USB and Ethernet Connections for $20. Use coupon code EMCMLNP27 to get free shipping.
Specs:
* Interface: Ethernet Port
* Standards: DOCSIS 1.0, DOCSIS 1.1 Certified, DOCSIS 2.0 Certified, IEEE 802.3, IEEE 802.3u, USB1.1
* Features: Specifications: Ports: Power, USB, Ethernet, Cable Buttons: Reset LEDs: Power, DS,US, Online, Link Environmental: Dimensions: 4.8" x 4.8" x 1.1" Weight: 7.90 oz Power: 9-12VDC,0.8A Certification: DOCSIS 1.1, DOCSIS2.0, FCCPart 15 Class B, UL 1950, CE Operating Temp: 32 to 104F(0 to 40C) Operating Humidity: 20% - 90% Noncondensing
* Parts: 90 days limited
* Labor: 90 days limited
* Model #: CM100-RM
Newegg.com - Recertified: LINKSYS CM100-RM Ethernet Port Cable Modem with USB and Ethernet Connections
LINKSYS CM100-RM Cable Modem w/ USB & Ethernet Connections (Refurb) $20 + FS 
