Big W is the best of the 'major department stores' in Australia for its price and.
They're willing to refund and exchange without many hassles and they price match. Also some stores (like this one) has a self check barcode scanning station and a self-checkout which is great!

This store is pretty big and is also quiet compared to others.

Approximate cost: $25

BigW i also high on my list of stores i visit for DVD's and Games for XBOX and PS2, i enjoy even just browsing the items there because i can most times find what im looking for cheaper than most places, the store i not too overcrowded which i love! and they have self serving checkouts which makes it a lot easier to get out of the store once i have what i want