So, today I received this 5-disc DVD box set that I bought through Amazon Marketplace.
I opened the mailer and, guess what!
The outer box with the art work was there, but there were no DVDs inside.
I called the guy, and he was also shocked.
Evidently, this box had been on display in his store, and (to prevent theft) the discs were kept elsewhere.
However, all's well that ends well.
He found the discs and is sending them overnight UPS to me.