<p>Do I submit my commonapp and all the suplements and then pay or do I pay first?</p>
<p>It doesn't matter. Just pay and submit either way before the deadline is over. They're all due on the deadline. Smile!</p>
<p>You cannot pay until you submit either the com. app. or suplement to this particular university. After you submitted one of them you can pay.</p>
<p>Yea, submit, then pay, then relax. That's how it usually works :D</p>