All prices are displayed "Free"

Hello,
Duh, dummy client messed something in his shop configuration and now all his prices are displayed as "Free". Seems like I'll have to go through 1000 options to try find the reason, but i was hopping someone has an idea why did that happen.
Here is the sample page: wshoeshop.com/index.php?option=com_hikas...ing&Itemid=2&lang=en
Thank you in advance, hopping someone will save my day.

Hi,

Your products's prices seem to be alright, did you solved your problem ?

I guess the dummy client has remembered what was messed and reverted it. Phew.
Cheers.