Cunard is part of the Carnival corporation. We have the grats included in our cruise next year, I suppose it may depend on how you purchase the cruise.
People should always compare pricing for the whole package for what the want and need on a cruise, this inclusive of taxes, fees, service charges, gratuities, but also drinks, specialty dining wifi shorex's, etc if they are what you would normally have with cruising. To do otherwise is comparing apples and oranges.