Below is a guide I hope you will find useful in saving on postage and packaging costs. This is how I use ebay and I hope you find the following useful.
Weather you are a buyer or a seller there are things you can do to save on postage costs. I buy a lot of my baby clothes on ebay and have managed to do this successfully many times. Sellers, particularly when selling multiple items in seperate auctions, can offer to combine postage. That will encourage the buyer to look at other items you have listed and hopefully bid on them as well. This will benefit you and the buyer. After all, we are not here to keep Australia post in business.
Another way to save on postage, particularly if you are from a city or larger town is to use the search panel down the left hand side and search by location/post code. That way you can pick your items up if they are near by. You simply enter your post code and select how far surrounding that post code you are willing to travel. The minimum option is 10km. This will not be useful for all items especially if they are few or rare. For myself however, there are thousands of listings for baby clothes and this works out very useful.
For the seller, having the buyer search by post code and offering local pick up and COD (cash on delivery) can also be beneficial. The buyer may be willing to pay a little more if they know they are not paying postage on top of that item. List your pick up location at the bottom of your add. This will advise buyers where you are without them having to message you and ask.