As quoted on the Costco Website - "Due to high demand we have had to substitute the Swiss Grill Z360 BBQ advertised in the 21st July - 10th August savings booklet with the shown Swiss Grill A200 BBQ. The RRP for this replacement bundle is £789.89"
Found the same model BBQ on Screwfix for £699 - and that's without some of the extras.
Other info: "Constructed from 304 grade stainless steel for superior performance and appearance, the Swiss Grill Arosa Series A200 Gas BBQ features a modern design combined with robust construction. It is low maintenance, designed to last, easy to clean and perfect for keeping outdoors.
It has 4 independently controlled stainless steel gas burners and stainless steel grids, while the adjustable side burner and infra-red rear burners allow for quick, perfect, juicy steaks every time. This BBQ is packed with features and also includes a commercial grade rotisserie, a large double cupboard for storage, a full length stainless steel warming rack plus a Swiss Grill signature bottle opener. Perfect for the outdoor entertainer, the A200 BBQ comes complete with a cast iron cooking griddle and all-weather protective cover, so you can use this BBQ over and over again for years to come."