I ship once a week on MONDAY MORNINGS. I spend the weekend preparing it all - so the last day to pay for postage each week is FRIDAY. If you already paid for postage within the week, and place further orders before the end of Friday - you can select the "Accumulate" option to avoid paying shipping again. Alternatively you can just select the "Accumulate" option for as long as you like. Then we will hold all your items until you select a shipping option in any order. You would then fall on the next shipping run. All your items get shipped together. We wouldn't ever send individual orders separately.