Add some text just before the purchase button on the checkout page in Easy Digital Downloads

gistfile1.php

<?php

function my_child_theme_edd_purchase_form_after_cc_form() { ?>

	<p>Enter your text here</p>

<?php }

add_action( 'edd_purchase_form_after_cc_form', 'my_child_theme_edd_purchase_form_after_cc_form' );