The biggest problem with the Variety Boxes is that the first couple had a raft of vintage and rare stuff in them. The newer ones have mostly decks that released this year, some of which are still in release, and most of which anyone who collects cards would likely already have. The few older decks they're stocking are not terribly rare or hard to obtain elsewhere.
Good deal for a beginning card trader, not so much for one with a little more experience.
If someone really wanted the IAOCP deck, they'd do better buying the book/deck set and selling the book, even with the market glut on books without the deck. Some forget that the book is also a limited edition, not just the deck.