Hi,
The solution will probably be to use this kind of php code :
$my = JFactory::getUser();
jimport('joomla.access.access');
$config =& hikashop_config();
$userGroups = JAccess::getGroupsByUser($my->id, (bool)$config->get('inherit_parent_group_access'));//$my->authorisedLevels();
if(!empty($userGroups)){
foreach($userGroups as $userGroup){
if($userGroup == YourGroupID){
$this->params->set('price_with_tax',0);
}
}
}
Note that you'll have to replace the
YourGroupID by your Joomla user group ID that you'll be able to find through your Joomla User manager page, and that you'll have to add this code at the beginning of the "listing_div" file of the "product" view of your front-end template through "Hikashop->Display->Views"