Hi Horst and thank you for contacting us.
We would be happy to help you discovering Palermo from a different perspective.
For further details, please take a look at this link http://www.addiopizzotravel.it/default.asp?tour=17
As you can see it's scheduled every Saturday at a reduced price, but it can be scheduled in a different day if it suits you better (by the way, I can't see any date of arrival in your message - can you tell me when are you going to be here?).
Do you need advices on accommodation, what to see, where to go?
We are at your disposal :)
Cheers,
Addiopizzo Travel