There is variation in price. If you want all-day-care, though, it will be between 130-150chf per day. Some have minimum attendance requirements too...
I can recommend you look at two options where I know the management and staff:
www.happynest.ch - the lady who owns and run this one is on our forum. It's not a long-day-care although the care hours are pretty long.
Edited to add: I think you will find their fees much more reasonable...and it would suit a non-working parent who can take them at their convenience...
The other one to try is :
www.childrenfirst.ch - I believe they are the only english 100% licenced long day care in Zurich and I worked there last year and loved it!
If you are looking bilingual, then there are heaps of options...if you want Montessori bilingual English/German/French then I can also give you some suggestions - please PM me for that...