Purchase Button Custom Add to Cart Link

function custom_purchase_button_cart_link() {

	?>

	<a href="<?php echo edd_get_checkout_uri() . '?edd_action=add_to_cart&download_id=' . get_the_ID(); ?>">Buy Now</a>

	<?php

	}

add_action( 'edd_purchase_link_end', 'custom_purchase_button_cart_link' );