Shipping costs refer to the fees charged by carriers to transport goods from one location to another. These costs can vary based on several factors, including the weight and dimensions of the package, the shipping method chosen (such as standard or express), and the distance between the sender and recipient. Additionally, shipping costs may include extra fees for services like tracking, insurance, or special handling. Different carriers, such as UPS, FedEx, and USPS, may have varying rates and policies, making it important for consumers and businesses to compare options to find the most cost-effective solution.