Offer Different Prices to "groups"

Hi,

I have just installed woocommerce and am in the process of setting up the products.

I have elevated users on my site who i want to offer discounts to. These users are managed using the “groups” plugin.
http://wordpress.org/plugins/groups/

I have seen that there is a woocommerce plugin that can offer different prices based upon user roles.
http://marketpress.com/product/woocommerce-role-based-prices/

I have not purchased the user role plugin so am not sure how easy it would be to get the plugin to work with groups or if it does this out of the box.

Is there a woocommerce plugin out there that will offer different prices based upon the users group?

Thanks

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