Combine them however you want and get 50% off the second unit of lesser price

{ "offers": [ { "sales_reference": "001020729200830 ", "seller": { "identifier": "001" } }, { "sales_reference": "001020729200822 ", "seller": { "identifier": "001" } }, { "sales_reference": "001020729201333 ", "seller": { "identifier": "001" } }, { "sales_reference": "001020729101954 ", "seller": { "identifier": "001" } }, { "sales_reference": "001020729201408 ", "seller": { "identifier": "001" } }, { "sales_reference": "001020729201390 ", "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": "001020729200830___,001020729200822___,001020729201333___,001020729101954___,001020729201408___,001020729201390___", "delivery_get_method": { "delivery_type": "home_delivery", "center_id": "0130" } }