Marketpress - price not showing on single product page

I cannot get the product price to show on the single product page. Whether I use my own mp_product.php or not. It is showing on my category listing page but refuses to display on single product pages no matter how I call it.

<?php mp_product_description($post->ID); ?>
<?php mp_product_meta(true, 'single', 'Price: ', $post->ID); ?>
<?php mp_product_price(true, $post->ID); ?>
<?php mp_product(true, $post->ID, false); ?>

None of these result in the product price being displayed. Anyone else encounter this? Any suggestions?