As a seller I would like to give you some tips on combined items you purchase. Most sellers will combine shipping and it will be cheaper for the buyer and seller. The seller usually list the item by weight, so you can figure you shipping cost, but some item will fit in flat rate boxes or envelopes. Once you have purchased an item ebay will automatically send an invoice for the seller on each item. When you recieve that invoice ask  to confirm with the seller on shipping. At that point the seller can get you items and weigh them and see which would be the cheapest or best way to ship your items. Don't feel like you have to pay that first invoice and don't be afraid to talk to the sellers. Ask questions and get the best shipping for your needs.

Thank you, Robin Youngblood

http://stores.ebay.com/qualitycountsusa