Try Hardware stores like Bunnings or Masters. However, products made overseas that are cheap will not last and you will have to replace them. Alternatively, go to your local Library and borrow gardening magazines like "Your Garden" published by Pacific Magazines/Eveleigh/Sydney, or "Gardening Australia" magazine published by the ABC. At the back of these magazines are advertisements from Australian Companies who make all sorts of gardening products. You can also search online for metal fabricators in your area or look up the Yellow Pages. Good luck.