Granite is generally more expensive than marble. Granite is a more durable and heat-resistant material, which makes it a popular choice for kitchen countertops and outdoor use. The cost of granite varies depending on the type, rarity, and location of the quarry, but it is typically more expensive than marble due to its greater demand and processing costs. Marble, on the other hand, is more readily available and less expensive, but also less durable and more prone to scratching and staining.