An Outline of New Testament Spirituality by Prosper Cardinal Grech is presently the $1.99 add-on to the Verbum Free Book of the Month.
Unfortunately, its product page lacks a bio of Cardinal Grech, or indeed any mention of the fact that he is a cardinal. This lacuna probably exists because he was made a cardinal by Pope Benedict XVI subsequent to the publication of this work.
Please allow me to suggest the creation of a suitable bio for His Eminence.