your assumption of what exactly?
you could spend $30k on housing, you can also spend less. schooling can cost upto $10k/month, but if your child is young enough, then maybe a local school would be suitable? in which case, it would be nothing...
as for "spending money"... i can only dream of having $30k/month for that...
really, if you use the SEARCH function, you will see that people have answered these questions about 10 times/week. there are numerous threads with various cost breakdowns that you might find useful.... you just have to look for them!