You cannot give away CDs on Ebay at the moment, so with Auction items you are better off offering free postage within Australia to encourage people to put in a bid. Postage is only around $2.00, so it is worth the risk.

Anyone listing postage prices of $8.95 per  single  CD, is turning away 95% of their market - but apparently this is the postage price Ebay recommends!  Even if you sent a CD via registered mail, it will not cost you $8.95.

If you are charging postage, make it clear in your listing that you will combine postage for multiple purchases, buyers are more likely to multi-bid on items