Lafayette colleege admissions

<p>"Admitted students who accept Lafayette’s offer of admission are required to submit the enrollment form enclosed with the acceptance letter, and to post a $700, non-refundable deposit."</p>

<p>What is this? If I am applying for financial aid, I can't possibly provide $700 (ok my family income is $2000). Can this provided by the financial aid package? Btw, do all colleges require a non-refundable deposit?</p>