Hi all,
I don't know a lot about cell phones or associated technologies, but I was looking at a website the other day that had great prices on mobile phones and cameras (I want a new phone, my parents want a new camera)

All of them seemed to be GSM phones, no CDMA. 

Is it simply a matter of buying a sim card for a phone purchased like this?

If anyone is interested in taking a look, the website is http://portagadgets.com/australia/home.php (maybe people here have had some experience with this site?)

Thanks for your help!