The Guardian has just launched it's iPad edition and it's free to subscribe for the next three months. So you'll get the next 86 or so editions for free but make sure that you turn off auto-renew unless you want to continue to subscribe. I've downloaded it today and my next sub payment would be 13th January 2012.
Now I know there are plenty of people who don't like this particular paper... if you do feel the need to unload any repressed vitriol against the Guardian... this probably isn't the place for it - but you're going to anyway so bring it on!!! :D