Single page price troubles

Right code to out price on file single-product.php is:

<?php

global $post;
$product = new WC_Product($post->ID);
echo woocommerce_price($product->get_price());

?>

So be sure that in your wp theme all is ok there, because there is exists wp themes with wrong woo php code there ...

Shortcodes, functions, actions and filters reference for FOX WooCommerce Currency Switcher