It is pretty amazing that cable companies like Charter pull a fast one on their customers by charging them $9.99 for a modem/router lease. The same device can be purchased on ebay and from various sellers for $20!!! yes $20 for something that Charter charges $9.99 per month! What a scam. Do the offer to sell it to customers? Or is it what you have is not compatible, so you need this.
Why are companies allowed to continue these deceptive practices? It is not fair to consumers and needs to be stopped.
As a consumer you need to question all charges and ask questions. If you don’t understand what a charge is ask. Hold the companies accountable.