since I am a cash only person? Am I able to pay with a money order?
Yes, checks should be made to JaDon Management, 1405 4th Ave NW #109, Ardmore, OK 73401. Tax exempt contributions should be made to PRI, same address. Simply indicate the book or books you want in a note along with your shipping address. Be sure to add about $4.95 per book, depending on the size.
I would suggest that you go to the website, whether it be BibleProphecy.com or DonKPreston.com, and add the book or books to the shopping cart. That way your cart will ring up the shipping charges and then just use that information for the check or money order amount.