Stingray is a very popular eating fish in Southeast Asia. However in Australia, it is known as Skate and does not seem to be eaten very often. This makes it a cheap fish to buy, and can be found at $3/kg from most seafood shops.
Perhaps its popularity in Asia is due to the way the dish is cooked. Roasted on banana leaf over a smoky BBQ, smothered with Sambal Chilli and served with thinly sliced shallots and wedges of lime. It really can't get any better.