Shipping in the U.S. is free for many products. When viewing a collection of products, use the "filter by" pull-down box and select "free shipping" (see below).
Filtering on products that have Free Shipping
Shipping Rates are listed by manufacturer/brand in the chart further down the page. You can find the manufacturer/brand of a product on the product page above the product's title on the upper right (see below).
Finding the Manufacturer of a Product
The following example pic shows the manufacturer/brand Lybethras circled in red.
Shipping Rates Chart