We always combine shipping charges. The amount is based on the weight and zip code. Please request an invoice and we will adjust the shipping charges for you on multiple item orders. Additional items cost between .25 and $1.00. Bulky or heavier items cost more, very small items are less. If you would like to know the exact shipping just purchase and click for seller to invoice. We will adjust shipping charges and send back invoice. If all is OK then pay if not then tell us and we will cancel order before you pay.