How much potatoes cost depends on a couple of factors. One factor is where in the country you live and if potatoes have to be imported into your area. This will increase the cost. Another factor is how well the potato crops have performed during the year. Generally, you can expect to pay 30 to 40 cents per pound. Some specialty stores sell organically grown potatoes which will come with a premium. Even at their most expensive, potatoes are one of the cheapest forms of produce you can buy.