Based on emails from Logos stating "Pre-order now to lock in the best price", I was under the impression that ordering resources while they are pre-pubs is the cheapest way to get them. However, I just noticed that some Zondervan Collections were at 20% discount as pre-pub, and once they were released they still had the same 20% discount. On the other hand, some already published Zondervan Collections were 60% off during previous sales.
Does this mean that pre-pubs are not always the cheapest way to get resources?