Hi,
Thank you for the reply. If I'm not mistaken I have to create these user groups in the Joomla backend, correct? Not within Hikashop? I'm using Joomla 1.5 and creating custom usergroups isn't possible. I'm not aware of an option in Hikashop that allows you to create usergroups, this would be a great feature IMO.
Even so, this wouldn't be ideal as I would then have to change twice the amount of prices whenever we change our prices. Ideally you would be able to put customers into a group like you suggest, and then tie percentage discount to that group, so that they'd always get for example a 15% discount. This way you wouldn't have to manage multiple prices for products, which can be tedious if you have a lot of products or make frequent changes to your prices.