The standard measurement for firewood, a cord is 128 cubic feet. This means that when it is stacked it measures approximately 4 feet high, 4 feet wide and 8 feet long. Cord costs vary across the country, but in general, you can expect to pay between $120 and $180 for a cord of hardwood that is split and seasoned. Prices could go up during the winter season, so you should plan to buy your firewood during the summer.