You have to have accounts with any network you'd want to watch. I watch more HBO than anything else so I have that. But I also have Netflix and I also have Prime. It would be tempting to drop those because I don't watch them as often but both have occasionally good shows -- I just saw reviews of a new show on each that sounded interesting. And of course, Prime has other benefits. I also have Hulu, but with commercials so that's either cheaper or free.
I'm going to look into an online network that bundles them.
In fact, I just did. Sling TV has been recommended to me. You can get the orange plan for $15, the blue plan for $15 or a plan that combines them for $30. I can do just the blue because it has almost every network I'd ever watch on cable and some I wouldn't, and the orange is almost all ESPN. Luckily, I never watch ESPN! I've kept it for years so my sons could watch, but they only visit occasionally and if, while here, they had to urgently see a basketball game or something there are three big-screen TVs with sofas, etc., in the public room downstairs.
So I can get both Wi-Fi ($25 through Verizon) and a bundle of cables for $40 a month. I'll throw in HBO, Netflix and Prime (possibly Apple+ but I don't watch that very often). So under $100 altogether, and I'd been paying $325 to Comcast.
Small complaint: HBO has been trying to rename itself Max. But if you say Max, nobody knows what you're talking about. Not even the Amazon Wi-Fi firestick, which has a speech remote. So I'll say "Alexa, get me HBO" and Alexa will say "Getting HBO Max." But if I say "Get me Max," Alexa will pull up a movie or TV show called "Max."
Now I just have to figure out how to watch local TV. That's not super urgent, though -- the Oscars and the presidential debates are a ways off. It's possible I could watch both on my laptop.