I checked out the site for Cox, my local cable company. For TV, they advertise $49.99, and above that in smaller letters it says "prices per month for 3 months, starting at." If I click "Find Out More" below the price, which it seems is required to get any details or sign up, it then gives me several plans whose prices are "for 12 months with 2-year service agreement." If I keep poking around I can finally view the terms of the offer which says "Bundle rate increases $15/month for months 13-24."

Certainly not great. But at least it's reasonably clear that the number they give you isn't the full story, even if finding the real one takes a bit of legwork. Not trying to defend them, but this helicopter thingy is a bit worse.