The cost of study abroad programs varies widely, depending on the length and kind of program you choose. For example, some programs include meals and tickets to activities while others don't. Read all the program literature carefully, and ask questions if you're unsure about the program fees. You should plan your budget and estimate expenses that aren't included. You'll want to have adequate funds available for the duration of your program. You should also include a contingency fund for emergencies, or at least have a plan in case you find yourself short of cash.
Plan ahead as much as possible. Don't hesitate to save early. If you have a birthday before your departure, ask for a contribution towards your trip. You might encounter some unforeseen expenses. For example, if you're traveling to a country that has harsh winters, then you may need to purchase sweaters or a warmer coat before leaving. Seemingly inexpensive things like film, a travel alarm clock, or travel guides can put a drain on your budget, so plan ahead.
If you currently have financial aid, you should know that most financial aid can be used for participation in a faculty-led program, provided you complete the appropriate forms in a timely manner and are eligible to receive aid.