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.
Qty
http://www.redbackexhausts.com.au/images/products/Fitting_guides/Fitting_Instructions_For_78_And_79_Series_V8_Land_Cruiser_TYP40200.pdf