My minimum shipping fee is $3.50. 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 $2.75. This is for a #10 envelope and less than 2 oz. Larger envelopes or more than 2 oz require higher fees. If registration is wanted, it is an additional $16.00. Usually more than one lot can be mailed with the minimum fee. 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.