Locked Mobile Phones? Is it Worth it?
NO. Though right now you might be using the same network you might want to change in three month? Especially since you can take your mobile number to any carrier.
Getting a locked mobile network unlocked can cost as much as nothing (very rare) to about $80 plus.
Although it might be 10% to 30% cheaper to buy if you cannot use it is just a paper wieght.
Furthermore late model mobile phones CANNOT BE UNLOCKED for about a year after release even with unlock software that proliferate the internet and ebay.
Even if your phone is older and can be unlocked you will need a special unlock cable and software or send your phone away costing time and about $40 to $90 if it can be unlocked.