It does look like the prices changed recently. I have 2 houses currently with similar plans. My currently living in house is using the Xfinity modem and costs $25 /m but I guess that’s the modem and the unlimited so not too bad.
My other house has my own network system and not using any Comcast hardware and that one is $30/m.
The bad part for me was until recently they refused to give me unlimited (when it cost $50) and I wasn’t able to get it for a while. It just wouldn’t go through. I got my fair share of overage charges cause of it. I’m sure if I spent enough time bitching at support I could get something from it but I don’t have it in me to do that lol