For mailings within the USA I am using the special card & stamps ebay envelope. My fee for that is .25. If I cannot use this method due to restrictions I will use the First Class Pkg rate. My minimum shipping fee for that is .50. This allows me to send out all items in the USA with a delivery confirmation. I do not charge additional shipping fees for additional purchases if sent together to a USA site. My minimum fee to a foreign country is .35. This is for a #10 envelope and less than 2 oz. Larger envelopes or more than 2 oz require higher fees. I usually use eBay standard Intl shipping for the large items. If registration is wanted, it is an additional .00. Usually more than one lot can be mailed with the minimum fee. If it is a large item I do use Ebays Intl Mail. I am not responsible for custom fees or delays, which can be considerable in some countries. I have been a member of the American Philatelic Society since 1977 I try to send out the stamps as described. If I missed something, please let me know.