To enable this, create a smart collection named All Products and set the condition to 'Product price is greater than 0'. You can create a collection through the 'Collections' menu in Shopify admin. Or you can turn this section off through theme settings.
Each pack includes 56 labels (36 smaller size, 2" x 1.8", and 20 larger size 4" x 1.4"). Backer shows both designs.