Prices from O2:
http://shop.o2.co.uk/update/paymonth.html
Stupidly expensive if you commit to 18 months, better if you commit to 24. Obviously a rip off you cannot upgrade early..
---------- Post added at 21:44 ---------- Previous post was at 21:41 ----------
I just checked my contract with O2 and online it's says it expires in October 2010!!! I got this one last July, making it over 24 months..Seems like somone's added an extra year..Technical weirdness.