It works at least one out every hundred times. Even more if you pray for the right things. How often do you expect God to answer peoples prayers, he is busy.
The good church folk of Dover prayed that enough money would be made available to fund the purchase of the book "Of Pandas and People" so the school district could buy them. And, because they all prayed together, the funds appeared. They didn't ask any one to donate the funds, it wasn't like that. Nope, just goes to show you the power of prayer.
You just have to pray for the right things
Your delusions are disturbing. So, in your story above, (the good church folk, praying for money), did the money appear by magic?
Here's the question: if I pray for money... if I pray 100 times, will I magically receive money, too?
If I pray extra, extra hard? You make the Jesus to be little more than a handy automated teller.