Hide price when price is zero

Hide price when price is zero

In price.liquid, replace:
Idea
{% render 'price',
  show_unit_price: true,
  product_resource: product_resource,
  show_sale_price_first: block_settings.show_sale_price_first
%}
with
Idea
{% if product_resource != blank and product_resource.price > 0 %}
  {% render 'price',
    show_unit_price: true,
    product_resource: product_resource,
    show_sale_price_first: block_settings.show_sale_price_first
  %}
{% endif %}