Price drop: Selling price drops are computed by Google by observing price variations for the product eventually. Selling price drops are certainly not guaranteed to be shown. A nested Evaluation with the product. Adhere to the Evaluate snippet guidelines along with the list of demanded and encouraged review Houses. See https://addons.prestashop.com/pt/seo-referenciamento-natural/31857-rich-snippets-automaticos-json-ld-opengraph-seo.html