Many of these come at no additional cost or a very minimal extra monthly fee. (guaranteedissuelife.com)
Any additional channels are added via channel packs for a small extra monthly fee. (slashgear.com)
When you sign up for dental and vision insurance through your employer, an extra monthly fee is deducted from your paycheck, but since those services tend to be used infrequently, for low cost check - ups and cleanings, you'll never get the value for what you pay for. (entrepreneur.com)