SURFboard AC2350 Cable Modem Wi‑Fi Router - Black

I have this exact model for years, thought I needed a new one. I didn't, it was Spectrums issue. Got this new at Walmart and missed the return time.  SURFboard AC2350 DOCSIS 3.0 cable modem with built-in Wi‑Fi router. Delivers fast AC2350 Mbps performance and dual‑band wireless for reliable streaming and gaming. Features four Gigabit Ethernet ports and McAfee protection for safer browsing. Black finish complements most setups.  +  When you get internet service the service provider charges you a monthly fee for the modem/router. +  This fee never ends it's sort of like a rental fee it's something happens with the router they will replace it at no charge but they may charge you a $65 trip fee to bring you a new one. +  When you own your own modem you don't have to pay a monthly fee in the modem can for years. If something happens to the modem you will need to pay to replace it.  But the savings of a $10-16 monthly fee are worth having your own modem.  If you go 3 years without needing a new modem, Can you have paid $540 just to rent their modem.