Yes, you could do the research and figure it out on your own, but it takes a lot of time (which would be time away from other aspects of your business!). Also, there are things about Amazon that can hurt you if you are unaware of them.  For example, Amazon’s offers a free ISBN number.  Free always sounds good, but in this case it is NOT the thing to do, as a book with their number cannot be distributed through other outlets such as Barnes and Noble.