Standard, Enhanced or Extended

The Licensing page says

With a Standard license, you may not:

• Create products for resale where the main value of the product is the image itself. For example, you can’t use the asset to create a poster, t-shirt, or coffee mug that someone would buy specifically because of the image printed on it.

I have licensed some images, standard license. I was trying to use them for the cover image on a puzzle book I am creating as a donation for a non profit.

Why do I need to by an Enhanced license? These will never reach the level of 500,000 uses because they are not for public sale.

The price of the license would increase my cost about $2 a unit and makes no sense. 

While the image is being used on the cover, it is not the main value of the product. I use it only to depict the theme, which is waterpolo. The puzzles in the book are the primary reason for purchase.

Can you offer any resolutions that will help?

Gloria