If you're buying multiple items, vCart is your new favorite tool. vCart is similar to a shopping cart but with a lot more power. Add all the items that you want to your vCart by clicking on the "add to vCart" link found on every product page (below the prices). It will tell you what the lowest cost is if you purchased everything at 1 retailer, 2 retailers, or the lowest retailer for each product.

Grouping purchases often saves you money on shipping as well as the hassle of filling out multiple order forms. After you've added an item, you will see a shopping cart button at the top of each page for easy access.