Hide products that have no price OpenCart

If you need to hide products in the OpenCart store that do not have a price or it is equal to zero, but at the same time you want these products to be opened via direct links, this solution is for you.

Products without a price will be automatically hidden both in the catalog and in all standard modules. At the same time, the index in search engines will not be changed, all pages of these products will still be available for indexing.

It also provides for disabling the Add to Cart button. Items without a price cannot be added to the cart!