Honestly I'd recommend looking at the companies website instead of talking on the phone. At least there you can "clearly" see what you will get. There is a chance that you might miss out on some deal the sale's guy would have offered you but I feel like the chances that he offers you some other bullshit are a lot higher.
If you want to get the best deals you should probably check their prices/packages every year or so because A: The usually lower prices because of competition (but that of course only applies to people who get a new contract) and B: "new" customers usually get some sort of 15% off or whatever for the first year.
My experience comes from dealing with german companies but I feel like most of this probably applies to your case as well.