You can pay as li.e as $ per s.f. for installation, but you can also pay upwards of $ per square foot, depending on the type of granite you choose..The cost of a granite countertop will, of course, depend on the size of your surface area. However, the average granite countertop will cost approximately $ to $ per square foot. In addition to the size, the cost will also depend on how thick you want the slab to be..Expect granite countertop prices to range between $ and $ per square foot, including installation. One way to cut down on granite countertops’ price is to opt for a thinner slabuse a inch thick stone instead of the typical inches..Whether you should install slab or tile granite countertops depends on your project, your budget and what you’re lo.ng to accomplish. You can purchase slab granite countertops for $ to $ per square foot, while you can get granite tile for $ to $ per square foot..