Big W has free shipping at the moment, guaranteeing your delivery in time for Easter. The free delivery offer started today and runs till the 20th, and is valid on online purchases only.
There are apparently thousands of items this is applicable to, but most of them are small items - it doesn't seem to be applicable to larger, bulkier items. The offer excludes products delivered direct from the suppliers too, such as DVDs and perfume.
When you're browsing the shop, just keep a lookout for the 'free delivery' logo. The discount will automatically be applied to your order during chekout.
Shipping charges are usually between $ and $20 for small items, so if you're buying more than one thing, you'll be saving a good enough amount, and if it means not dragging the kids in and out of carseats and shops, even just $4 is worthwhile in my books!