[clug] Short term 3G internet?

[Michael Still]

Hi.

I'm going to be in Australia for about seven weeks soon, and I'm
probably going to be oncall with work for a least some of that time. I'm
therefore tempted by one of those Vodafone "mobile broadband cards".

(http://store.vodafone.com.au/mobile-phones-vodafone-usb-modem-5gb-mobile-broadband-for-39month.aspx?pid=vcap%3ahome%3ab%3a2%3a4)

Given I'm only going to be using it for two months, I don't really want
to sign a two year contract. Is anyone aware of a shorter term option
with these things?

Thanks,
Mikal