Is there anyway I can unlock iPhone 5 locked on Orange?

I have an iPhone 5 that is locked on Orange but I need to use my O2 sim. I have called orange for unlocking (which they do for £20) but they said I have to use my iPhone with my paired Orange sim for at least 6 months before I can unlock it. I have only used it for 2 months. So I tried the black market for unlocking and the cheapest I found was willing to do it for £90 which is ridiculous. I have also heard the websites claiming to unlock iPhones are all fake. Does anyone know any sort of way in which I can get my iPhone unlocked for a reasonable price?

There are a lot of legit Unlock Service on the internet. And if you want a permanent Unlock for your phone it be a bit expensive. Try http://jailbreakhome.com/iphone-factory-unlock.