From the website is this statement
How We Got Started
Kingdom Prints was formed out of a desire to assist Jehovah's people in our preaching work by providing Public Witnessing Artwork and supplies. After serving at Bethel in Brooklyn from 1999 - 2013 this seemed a practical way to continue serving, while covering my material needs. In early 2014 many brothers lost access to affordable displays. I've heard of some paying $30 to $80 per display from local printing and office supply stores. Our goal is to provide high quality at a fair price until Jehovah makes other arrangements
Seems that the WTBTS which prides itself in being a large printing establishment can't manage to keep up with the chariot.
Here's their statement about copyright
Copyright Notice
All the artwork provided through this website is is the property of Watchtower Bible and Tract Society of Pennsylvania and is copyright protected. All remaining content appearing on this Web site is the property of:
KingdomPrintsLLC
Copyright © 2014 KingdomPrintsLLC. All rights reserved. As a user, you are authorized only to view, copy, print, and distribute documents on this Web site so long as (1) the document is used for informational purposes only, and (2) any copy of the document (or portion thereof) includes the following copyright notice: Copyright © 2014 KingdomPrintsLLC. All rights reserved.
Customer must provide files they need printed and the July 9, 2014 Copyright Permission Letter from JW.ORG. Your order can not be processed without it.