Hi. I live in Portugal, and I'm thinking of buying an iPhone 4, after the iPhone 5 comes out. I wanted to ask how much do you think the iPhone 4 will cost in the used market after the iPhone 5 comes out? And do you think it's worth buying it on EBay or something? I don't know how much would the shipping cost, so I don't know if it would be worth buying in Portugal's used products websites, or on EBay. Can I have your opinion please? Thanks.