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Some cable companies go out of their way to make sure you don’t know about an incredibly easy way to shave $100 or more off of your Internet bill each year. If you’re using a modem provided by your ISP, that company is charging you a monthly fee of between $8 and $10 to rent it. What you might not be aware of is that you can buy your own cable modem, return the one you’ve rented, and eliminate that fee entirely. Check out the D-Link DOCSIS 3.0 Cable Modem, which is on sale right now on Amazon for just $29.99. That’s right — all you need to do in order to save $100+ a year is buy a $30 box.

Here are some highlights from the product page:

Compatible with Comcast Xfinity, Time Warner Cable, Charter, Cox, Cablevision, and more. Requires Cable Internet Service

Not compatible with: Verizon, AT&T, or CenturyLink

Cable Modem only (no WiFi router)

Integrated home services

Maximum downstream speeds: 30 Mbps (640QAM) / 43 Mbps (256QAM) / up to 320 Mbps through 8 channel bonding1 .Maximum upstream speeds: 30 Mbps (TDMA) / 35 Mbps (SCDMA) / up to 160 Mbps1

Modem only. Router not included

Compatible with major US cable providers, including Comcast, Time Warner and more

D-Link DOCSIS 3.0 Cable Modem (DCM-301) Compatible with Comcast Xfinity, Time Warner Cable, Cha… Sale price withheld at the manufacturer’s request. Visit Amazon for pricing.

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Looking for a cable modem that supports faster speeds? Try this one for $45:

ARRIS SURFboard (8x4) DOCSIS 3.0 Cable Modem, approved for Cox, Spectrum, Xfinity & more (SB614… Sale price withheld at the manufacturer’s request. Visit Amazon for pricing.

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