Payment is expected within 24 hours and required within 48 hours. For combined shipping items MUST be purchased within 24 hours of first item. and while you are here, why not take a look in my store. I have many vintage and antique items many hard and very hard to find items. I do not combine shipping on items that are " on sale". Due to paypal rules and fees and the USPS constant increases in prices, I can not combine shipping on items that are "on sale". REMOVES THAT OPTION FOR ME WHEN ITEMS ARE PUT ON SALE. If I charge $10 for shipping, and paypal take just over $1.50 in fees leaving $8.50 to pay for box, packing and post office charges. If you live in Texas it is usually a break even price for me. If you live in NY or CA I usually lose a little on shipping. If I refund any shipping via paypal, it will not be much as I cannot get the fees (that I paid on the refunded amount) refunded from. I am sorry for this but it is out of my control..