Gone are the days when broadband internet connection were exclusive to wires. Thanks to the evolution of 3G and recently, 4G the scenario has changed drastically and wireless internet is now a different beast altogether. With 3G and 4G you can have speeds as high as 3.6 mbps to 100 mbps, all without wires. But wireless freedom comes at a price and as one would expect wireless broadband plans are little costlier than the corresponding wired connections offering similiar speeds. So selecting a wireless brodband plan that suits both our requirement and wallet is what one should look at.
To begin with, first lay down your requirement in terms of total monthly download limit or your total monthly hours of usage. Usually hourly rates based internet plans do not have download limit. So go for these plans if you need wireless internet connectivity only for certain hours like during travelling etc. In general, based upon your usage pattern, you should be able to arrive at both these figures - your total hourly requirement per month and your total upload plus download bandwidth. Once you have that in hand, you can check various wireless broadband plans from different service providers to see which one of the two works out the cheapest for you.
Another important factor to consider is the ISP's track record. You can view reviews, feedbacks of different service providers by visiting websites like http://www.broadbandexpert.com.au/ etc.
And remember do look out for deals and offers, but don't make them the primary factor while choosing a broadband plan, always keep them secondary.