Well, babies are unpredictable- so there's multiple ways of doing this

1) $775- You give me your due date, and I block off 3 days for you- in the event you go into labor outside those 3 days and I am unavailable, one of my 3 partners will also be aware of your due date & may be able to attend the birth- if not, your shit outta luck, but 90% of the time- I am able to make it, I just cant guarantee it!