Let’s face it, graduate studies in most fields can be expensive and set you back many thousands of dollars right from the beginning. The good news is that, in many respects, it is easier to finance graduate school than undergraduate school, and your situation probably is not as bleak as you might first assumed.
There are many resources out there to help you calculate the cost of grad school. Keep in mind, that much of this cost depends on where you reside and also whether you will be studying abroad or staying local.
I also recommend this article: How much does grad school cost? Can I afford it? that I wrote for MyGraduateSchool.com which also has great resources related to applying to grad school
I also recommend this article: Paying for School: How much does grad school cost? which describes the various sources of income that you can apply for in order to afford tuition and living expenses.