That sounds good.
Actually the problem turned out to be a bit more complicated. Our client wants that unregistered Users are able to click on the product-pages and see them. But the prices and a div called class = summary entry-summary should be hidden.
Further explanation: The products are grouped products and the different variations of them contain the unit prices. That means, when you click on the product, it is possible to chose one of the first size, one of the second size and so on … and this must be hidden. I only managed to hide the normal prices.
