You can expect to pay between $65 to $200. A locksmith should be able to open your door in minutes by picking your lock. You should be wary of a locksmith attempting to use a drill immediately for this task.
Using household items like paper clips or toothbrushes, you can easily defeat 70-80% of the padlocks out in the world. The teacher is Kevin Reeve of OnPoint Tactical. Kevin has trained and consulted for the FBI, Secret Service, SWAT, and elite military units like Marine Force Recon, SEAL Team 6, etc.
Generally, all you'll need to pick a lock are some picks (long, thin metal pieces with curved ends of different shapes for different types of locks) and a tension wrench. You can use paperclips as picks in a pinch, and a tension wrench can be any tool used to create tension, including a flathead screwdriver.
That doesn't sound too secure, does it? Of course, people breaking into your home aren't likely to have keys, but the fact that the locks are so standardized makes them very easy to pick or bump. Once you learn how to pick a lock, you can pick pretty much any standard lock you come across.
Bolt Cutters
Bolt cutters are a common and effective tool for breaking padlocks. They work by applying significant force to cut through the shackle of a padlock, allowing it to be opened without a key.