Monthly internet connection costs. Question?

When i had a regular land line telephone, back in the old days, it was thru AT&T.
On their web site it states internet could be $55.00 bucks a month with automatic billing on your credit card.
That sounds pretty good with me.
BUT, there always is a but.
I have to do more research with them about their equipment required for me to connect with the internet.
Do i have to buy the equipment, or is it rented, with an additional charge each month on the bill?

We had and are getting again at our new home, AT&T fiber. When we had it in Georgia it was only $55/month, no other charges.

We dropped cable a couple years ago. For awhile we had Hulu Live, which started at $65/month but went to $81. Now we have Hulu plus ESPN+, and Peakcock (which gives the local NBC station Live). Hulu is $15/month and Peacock is $5/month.

We have Roku that sends the internet to our non Roku televisions. Roku has live news and lots of movies. You buy the Roku unit at Walmart, then it doesn't cost anything else. If you buy a Roku TV, it's already included and you just connect it wireless to the internet.

Then we get prime Video with our Amazon Prime account (again. lots of movies) for $15/month, I think. Then we get Paramount channel with our Walmart+ account. My wife still uses Walmart + for free delivery of groceries and we get .10 a gallon off gas at Walmart.

****, it all adds up, and its a bit to get used to but its doable. And, it's better than paying Comcast big bucks because they think "they can".