Here is a screen shot of a spreadsheet that will hopefully help you get an idea of the costs associated with book rentals along with some projected profits. (If you would like a copy of the spreadsheet email me) 

The textbook and book rental business is not an easy route to
mountains of money but if you have an inventory or credit to build
an inventory, during the course of a 3 to 6 month period there is the
potential for a decent return on investment of both time and money.

Next posts will outline what work is involved in the book rental process.