Mysupermarket.com currently lists it as 'unavailable' at Tesco, Sainsbury, and Asda. Ocado list it as 'currently unavailable due to limited supply'. I've never figured out why Green Giant sweetcorn should be as expensive as it is. Seems they've kept their prices high from years ago, when it was the only brand available. These days everyone has sweetcorn. To save money, why not just chop up some pieces of frozen sliced peppers and add them to a supermarket's own brand canned sweetcorn?
coffeeboy I also have a fondness for this item, failing to find any or for something more cost effective just buy normal sweetcorn and frozen mixed peppers and boil the peppers in slightly sweetened water and then mix with the sweetcorn.