It is smarter to buy within australia because when you do so your shipping costs dont exist. You options may be smaller but you enable chances like pick up only. when you buy from australia you wont be hit with a huge bill for postage costs.
When buying with ebay make sure that you read all terms within the advertisement. how much it will be to post or ship or how much it will cost to return or even if it van be returned if it is damaged. ensure that your covered!!!!!!
read advice like it will only ship to australia otherwise you may pay for something that you cant actually receive. take care and read payment methods carefully because if you have purchased an item and have no means of being able to pay the supplier you could create some trouble for yourself.
Asses the situation before buying! read feedback from previous buyers to ensure that you will actually receive the product reassure yourself that he has had good feed back from other buyers.
Make sure that you understand and read about the condition of the product before buying. it is essential and creates less confusion in future the potential buyer may receieve goods that dont look anything like the picture but yet it clearly states in the blog of the item that this photo was take 5 years ago.
i hope that my tips are helpful to everyone all these tips are from previous buying experience and i have learned from them. in the end it falls down to being my fault for not reading the fine print of the item i was intrending to purchase.
Ebay bidding is fun addictive but in the end its your money and your loss so understand your responsibilities as an ebay buyer. otherwise happy bidding and all the best.