just checked to see how much the place my kids went to charge- for a 3 day/4 hour per week program $300 per month. this does not include about $300 for registration which is twice per year (for the schedual that follows the school year and again for the summer programs). includes one snack (parents take turns providing), and any field trips are extra. thats still less than the 'chain' preschools charge in our area.
we live in northern california-but more of the 'burbs' not close to any major metro area.
we live in northern california-but more of the 'burbs' not close to any major metro area.
and
you a bit, but DS (who was 3 at the time) was in daycare pre-school from 7:30 am till about 5:15/5:20 pm M-F (DH and I work full time). We were paying $900 per month (about $150 per week). 
Different daycare/preschool, of course.