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.
"Are You Kitten Me Right Meow?" cat shirt. Nope, we're not. This shirt is purrfect.... ohhh zing. We can do this for days guys.