issue in sort by product price

[rupesh]

Hello,
I'm having problem with sorting feature of product price for samsung products in my website "http://elifeshopping.com/index.php?option=com_virtuemart&view=category&virtuemart_category_id=14&Itemid=&order=DESC"

i'm using joomla 2.5.1 and vm 2.0.2

i have disabled seo option from global configuration to check if its works! But it is not working Properly!

Can anybody suggest a solution?

Thanks for consideration,
Rupesh