Why should I pay for a sim free mobile phone when I can get one free on a contract?
Well you may not want a contract, or you may live in a country where you cannot get a contract, or you may have to pay a deposit before you are allowed the contract, or you may need lots of phones, or you may not want to be committed to paying a network provider a chunk of money for calls you do not know for sure you are going to make, or you may not be able to get the very latest phone on contract yet, or you may have lost/broken/swallowed your last phone and want a brand new replacement to use your current sim card or contract sim card in. There are lots of reasons.