<p>i'm taking 2 SAT subject tests in june.</p>
<p>but i decided i wantt o also take the chemistry one. can i just take the SAT II chem and have them charge me?</p>
<p>how does it work?</p>
<p>Yeah, just sign up when you get to the test center, tell them you want to take the chemistry one, and they'll send the bill.</p>