If you wish to purchase multiple items from me you can easily do so and request one invoice for everything:

1.     Simply add all items to your cart, either through the 'Buy it now' or 'Add to cart' buttons.
2.     Once you have the items in the cart, near the top, there is a link to 'request total'
3.     Click on that link, it will take you to a page titled 'Request total from seller.' You will see the message 'You have not committed to buy these items yet.'
4.     Scroll down to the bottom of the page, there is a button titled 'Commit to buy & submit request'. Once you click on that, it will notify me of the sale and request that I create a combined invoice. That’s all there is to it!