We will always combine shipping. If items are on sale, we will need to refund you within 24 hours. Shipping policy for domestic small items: The highest shipping plus 75 cents per lot. Larger domestic shipping items are the highest shipping plus $1.00 shipping. Large albums and heavier items vary. The product is a set of stamps from Norfolk Island with a focus on birds. These stamps are in Mint Never Hinged quality and have a grade of XF (Extremely Fine). They are from the British Colonies & Territories, specifically from Norfolk Island. The certification is Uncertified. These stamps are a great addition to any bird stamp collection or Norfolk Island stamp collector's assortment.