When I had cable the $30 plan was the "just the stuff you can get OTA plus some shopping channels" plan. If you wanted actual cable channels you had the choice of:
1. "Basic" bundle, $60 + $20 in fees + $8-15 per set to rent the box. Got you ESPN, Food Network, SciFi, Cartoon Network, USA
2. "Complete" bundle, $100 + $20 in fees + $8-15 per set to rent the box. Got you BBC, a bunch of foreign language channels, Starz, and a few more.
You could also add HBO to either plan for $15 a month. I think they may have had a few other premium channel options as well, but I never paid that close of attention.
We cut the cable because the price had crept up from about $50/month total to almost $100/month over the course of a few years. It was just unsustainable. Now we pay about $40/month for streaming services, and the streaming services don't have ads.