Shipping costs are calculated from the product size, destination country, shipping method, and whether the order contains one item or multiple items being shipped to the same address.

For multiple-item orders, our system checks whether the items can be safely packed together and applies a reduced additional-item calculation when possible.

For example, several rolled posters shipped in one tube may share the total shipping cost across the items. However, products that need separate packaging for safety, such as some framed products, may be calculated separately.