Ordering Products by Price with the Product Catagory Shortcode

Hi,

I’m trying to display all the products in a category on one page using the “Product Category” shortcode. I want to show them in Price order using the shortcode like this:
[product_category category="12-volt-televisions" per_page="25" columns="4" orderby="price" order="asc"]

Do you know if this is the correct way to use the shortcode?? In the help it only gives the example of ordering by Title but it must be possible to order by Price.

At the moment the products are jumping around to different positions everytime I reload the page! So something is obviously not right at the moment!

Here’s the page where I’m trying to display the products:

http://www.kuma.co.uk/WP/12v-televisions/

Thanks for any help 🙂

http://wordpress.org/plugins/woocommerce/