You get your name in the PDF as a contributor to the project as well as a small timeshare of my mortal soul.

The dang ol book in all it's digital glory. You will of course also get credit in the book, as well as a small timeshare of my mortal soul. (redeemable only in the afterlife)

You obtain not only the dang ol book, credit within the pages, a small timeshare of my mortal soul(redeemable only in the afterlife), but also bragging rights amongst other backers of this project. You will get to throw your weight around in the "I backed Echoes in my Hull" social circles. For what it's worth.