Milk, bread, and a coffin - it's not your average shopping list, but Costco isn't your average supermarket.

Burial caskets and coffins went on sale at Costco Wholesale's store in Ringwood, in Melbourne's east, on Wednesday, and there are plans to introduce them to the low-cost retailer's seven other Australian stores in the coming months.

Coffins and caskets have gone on sale in one of Costco's Melbourne stores.

Costco said 14 different coffins and caskets ranging in price from $360 to $3800 were on offer, alongside the store's eclectic mix of groceries, electronics and household goods.

They are at least half the price of equivalent products sold at funeral homes, potentially saving customers thousands of dollars, according to manufacturer Scientia.