I'm in two minds over this deal and whether its actually a good deal or not:
The offer ends at 23:59 on the 25th of January, UK time, so you have roughly 15 hours to go.
The thing is, if you're desperate for River Island clothes, the free shipping is a bonus, since they normally charge £10.00 - $15.12 - for delivery to Australia. Even that's not huge though. However, the clearance section has some pretty good sales, and it's full of winter clothes, so you can prepare for the coming months.
Okay, so I'm firmly on the fence. If you particularly love River Island, take advantage, if you don't, skip on by, this offer's not for you - or me ;)