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

{ "offers": [ { "sales_reference": "001055760400212 ", "seller": { "identifier": "001" } }, { "sales_reference": "001055760501373 ", "seller": { "identifier": "001" } }, { "sales_reference": "001055760400972 ", "seller": { "identifier": "001" } }, { "sales_reference": "001055754400210 ", "seller": { "identifier": "001" } }, { "sales_reference": "001055754401705 ", "seller": { "identifier": "001" } }, { "sales_reference": "001055754401713 ", "seller": { "identifier": "001" } }, { "sales_reference": "001055754401739 ", "seller": { "identifier": "001" } }, { "sales_reference": "001055754401721 ", "seller": { "identifier": "001" } }, { "sales_reference": "001055754401770 ", "seller": { "identifier": "001" } }, { "sales_reference": "001055754401762 ", "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": "001055760400212___,001055760501373___,001055760400972___,001055754400210___,001055754401705___,001055754401713___,001055754401739___,001055754401721___,001055754401770___,001055754401762___", "delivery_get_method": { "delivery_type": "home_delivery", "center_id": "0130" } }