How much will it cost to unlock an iPhone 5? And how can I do it?

I'm on the search to buy an unlocked iPhone 32gb because I tend to travel alot so I just figured it'd be must easier.
So does anyone know the approximate cost to do so?
And how to do it?

Sorry I'm a bit of a newbie when it comes to this unlocking business.
Thanks for your time.
Have a good one.

Added (1). I'm not looking for a contract with a company.
I'm just looking on how I would go about unlocking an iphone 5.

If you purchase it with a contact at either AT&T, Sprint, or Verizon, it will be $299.99 for 32gb. You just go into the store and say: I would like to purchase a 32gb iPhone 5 and start a contract! But on the other hand if you buy it unlocked on the Apple website it will be $749.99.So, if you by it with a contract, then you can text, call, use data, etc.

If your looking to unlock your iphone 5.
There many websites which offer this service for certain cost, i would advise you to try them.

The unlocking cost for an iPhone 5 would differ according to the network to which it has been locked to. The safest and easiest way to unlock an iPhone 5 is to unlock using remote unlocking service. You can get the remote unlocking service for an iPhone 5 from http://www.simpleunlocking.com/apple-iphone-5/rs16wp9/ at affordable cost. Before that you can visit http://www.mobileunlockguide.com/apple-iphone-5 this site provides free unlocking instructions. This could help you understand unlocking process better.

Just try "LongPathTool"
New feature: Made it possible to delete deep directory structures and too long path errors (Path too long, Can't delete file or folder The file name you specified is not valid or too long. Specify a different file name, The filename or extension is too long, Path too deep, Destination Path Too Long, The file could not be accessed, The path you entered, is too long. Enter a shorter path). Try deleting the folder created by this batch file without the new "LongPathTool" you will understand.
• Improved UI: Progress bar when deleting large folders
• Improved UI: Fixed all references to previous website in UI
• Fixed Bug: Fix crash which happened with deep paths in old versions
• Fixed Bug: Fixed update check to match new "LongPathTool" website