Set a default price for normal configurations when Rank Math is mounted with a WP Web-site. Check with the choices and default values here. It's huge assistance for a large amount of different schema kinds, platforms, and even third -party plugins for instance WooCommerce. Moreover, you may give this plugin https://addons.prestashop.com/fr/seo-referencement-naturel/31857-seo-automatique-google-rich-snippets-json-ld-open-graph.html