Yes, there is data plan with the cellphone that's separate from my regular (computer) internet. They charge a lot for the computer internet when you don't bundle it with TV and phone. And the bundle promotional prices last a couple of years at best, and then you're looking at more than $100 per month for TV, internet and phone. And if you don't bundle, which I don't, they fleece you for the separate service.
My cable internet (no land line, no TV) is outrageous at $84 a month, and that's for the mid-level plan. The phone is separate and now will cost me around $37 or $38. I don't have international calling, as that would cost even more. I'm going to do battle with the cable company over my internet bill. It's ridiculous for what little I get. And they cap the data at a terabyte per month. I mostly don't reach that, but there was one month when I was watching a lot of streaming TV that I nearly met the cap. It's such a rip-off. They keep wanting me to buy TV and phone, and I'm not interested. I don't watch enough TV to warrant cable. I haven't had it since 1993 or '94.
The other problem is the lack of competition in my area. Cable companies, which also provide internet in addition to TV, practically have monopolies in the territories they serve. The only high-speed cable I can get is Cox. The others offer only DSL or satellite. I don't have a land line, so DSL is out. I haven't researched satellite internet to see about the cost and reliability. So basically Cox can charge whatever it wants because it's the only game in town. The other halfway decent companies, like Xfinity or Verizon Fios, aren't available in my area. Every other town around me has those options, though, but don't have Cox. It's a challenging situation for sure.
Also, to put things in perspective, my state is one the priciest in terms of cost of living in the U.S., especially for utilities and gas (for cars).