We combine the shipping.The cost for  the shipping(1.50 $ for domestic/ 3.50$ for international) it's a flat rate ONLY!!!!.If you're want to secure the shipping and have  trucking number it's going and cost you more ( 3.50 $.domestic and 22 $ international). It's NO RETURN. For the customers who want to tell me what I don't know (I hope everyone understand what I  mean by that).Please!!!! TAKE IT OR LEAVE IT!!! Don't waste my  time!!!!! Let me know your  decision about  the shipping cost and I sent you final invoice.