We ship Domestic packages at a flat rate of $2 per package, you can put as many items in the package as you'd like without any additional fees so long as you pay on one combined invoice. We ship Domestic USPS First Class packages 5 days a week. International packages are shipped at a flat fee of $4 per package, no additional charges for extra items in package so long as it's paid for on one combined invoice. We ship International packages on Tuesdays and Fridays.