Not sure if you resolved this but this was my workaround:
In dp-products.php remove the if/else statement starting on line 25 so that all you should have is:
$product_price = $all_custom_fields[‘price’][0];
$custom_fields_output[‘price’] = ‘<p class=”dpsc_price”>’ . __(‘Price:’, “dp-lang”) . ‘ ‘ . $dp_shopping_cart_settings[‘dp_currency_symbol’] . ‘<span class=”is”>’ . $all_custom_fields[‘price’][0]. ‘</span></p>’;