Por la compra de 3 unidades iguales o combinadas de los siguientes artículos, GRATIS el de menor importe

{ "offers": [ { "sales_reference": "001018006601233 ", "seller": { "identifier": "001" } }, { "sales_reference": "001018006601365 ", "seller": { "identifier": "001" } }, { "sales_reference": "001018006601381 ", "seller": { "identifier": "001" } }, { "sales_reference": "001018006600722 ", "seller": { "identifier": "001" } }, { "sales_reference": "001018006600466 ", "seller": { "identifier": "001" } }, { "sales_reference": "001018006601324 ", "seller": { "identifier": "001" } }, { "sales_reference": "001018013200045 ", "seller": { "identifier": "001" } }, { "sales_reference": "001018006800041 ", "seller": { "identifier": "001" } }, { "sales_reference": "001018006800223 ", "seller": { "identifier": "001" } }, { "sales_reference": "001018006100095 ", "seller": { "identifier": "001" } } ], "subsite": { "identifier": "supermarketHipercorStore", "parent": { "identifier": "supermarket" } }, "query_params": { "centers": { "home_delivery": "0130" }, "is_full_documentation": false, "is_include_offer_availability": true }, "query_list_get_method": "001018006601233___,001018006601365___,001018006601381___,001018006600722___,001018006600466___,001018006601324___,001018013200045___,001018006800041___,001018006800223___,001018006100095___", "delivery_get_method": { "delivery_type": "home_delivery", "center_id": "0130" } }