Be careful approaching Flight Centre to assist you in obtaining VISA's, they are thieves.
In my case I was quoted $160 for literally 8 minutes work (yes, I timed it...a little less than 8 minutes actually when I did it myself).
Flight Centre staff by default are forced to recommend a company called VISALINK CIBT. That's $20 per minute. That's just to get your VISA...you pay extra for the actual VISA. Plus delivery ( at a rate far more than post or courier).
If you need a VISA, DO NOT DO IT VIA FLIGHT CENTRE OR CIBT VISALINK (they prey on uneducated travellers), go directly to the Australian Government Smart traveller website...all links and instructions are there and it's dead easy.
On average VISA's are not required in most instances or they're free or they cost ROUND $50 AT MOST.