I've noticed that the most common question from bidders is "What is the postage to WooWoop 3125?"
To assist potential buyers, weigh your item, provide your postcode, and point bidders in the direction of Australia Post's postage calculator. If the item you have for sale is a large one, provide the package dimensions as well. It doesn't matter in which direction the item is mailed, the cost is the same.
Saves your and your potential buyers time and trouble.