I own almost everything and more in Zondervan's prepub. Even with the 40 percent discount it would cost over a $1000 to update my Pradis resources. There is no payment plan for prepubs and the discount can only be used once. It appears to me that Zondervan did this intentionally so that many Pradis owners would not be able to take full advantage of the discount. It's bad enough the discount was so meager. Making it nearly impossible for those who invested heavily in Pradis to take advantage of it is unforgivable. Or at least it is for me.