I would add that there are also not-free ISPs which can be lower than $80, but again it depends on where you are, and what you want.
In many places there are companies that want to bundle Internet with cable TV and telephone, which adds up. I haven’t wanted cable TV for a very long time.
In most places, there will be at least one DSL company (through your phone line, not the fastest but good enough for video) and one or more cable companies (through a coax cable designed for TV, usually faster to download things, but usually shared with whatever neighbors also use cable).
In most places, there will also be multiple wireless providers, mostly wanting to sell cell phone service these days, but some may also sell Internet connections via 3G/4G/5G wireless service. Their performance and availability depends on reception at your location. You may be able to get “mobile hotspot devices” from them, if you want.
There are also satellite Internet providers, though they usually want to sell you TV bundles as well, want you to mount a satellite dish, etc.
And there are ISPs who will sell optical fiber connections. Those can be extremely fast… and can range from free to super-expensive or unavailable, depending on where you are.
And then there’s Star Link, the amazing and perhaps frightening new service from Elon Musk that you can see doing dances in the sky on a clear night, involving a spectacular array of new satellites all over the sky. Currently it’s being tested as they add more and more satellites, and has a public test program which you could try to sign up for but I think in most places has a long waiting list and is not cheap.