You are buying a digital book. There are many Chapters done and more will be added as they are completed.
The eBook purchase is $250 and good for 24 months.
If you pay $450 you will get the eBook and a Full Color Printed Copy when the eBook is done. Free shipping to the Lower 48 States.
The retail price of the printed book will be $350 plus S/H of $22 when it is completed in May of 2021. The eBook will still be available to you after the printed book is delivered to your door for the remainder of the 2 years. You can study anywhere and also keep the printed book at the shop as a reference for everyone.