For anyone who buys their iPhones sim free, why do you do this? I was thinking about it today, why lay out £500 minimum on an iPhone, instead of taking out a £30 a month contract. It isn't saving money for me, in some cases over 2 years it's not that much more on contract. I'm not sure why I do it. I guess it gives me flexibility to change more often and I don't like being in contracts. Am I right in assuming if I sold the 4s next year before the 5 comes out I wouldn't loose that much money? Do you think I could sell for about £380?