Firstly I have installed Joomla and Virtuemart from scratch and no prices were shown in the frontend (Joomla 2.5.8).
Next I updated a previous installation from 2.0.14 to 2.0.18a and there are no prices shown in the frontend.
Within the Virtuemart configuration there are all checkboxes checked to show prices in the shop.
Prices will be shown if I restore the previous version. Who has an idea and can help me, I do not have any glue.
See http://forum.virtuemart.net/index.php?topic=112675
That's the glue....I've set it to -anonymous-