If your art is on consignment at a gallery and you have a consignment agreement with the gallery, the allocation of shipping costs should be outlined in the agreement. In many cases, the artist (consignor) is responsible for the shipping costs when sending the artwork to the gallery, while the gallery may cover the costs when shipping the artwork to the buyer. However, this can vary depending on the specific terms of your consignment agreement.
It is essential to review your agreement to determine the exact allocation of shipping costs between you and the gallery. If the agreement does not clearly address this issue, consider discussing it with the gallery to reach a mutual understanding and potentially amend the agreement to include this information.