It is a very good deal. Here's why:
1) It's a Pinebox not a Saddlebag so that's 50 cards not 20.
2) There is something for maybe every old deck you have - several solid starting dudes most noteworthy - that flesh out old concepts that previously wouldn't fly.
3) The set is packed with new ideas including 3 new homes, a bunch of new thematic spells, new actions that include spot removal and two cheatin' resolutions, even core deeds for remaining factions.
4) The cards have been play-tested (read: a hell of a lot of work - rough estimate 500 hours), rather than just released into the wild because some designer had a "cool" pet idea.
5) Not only all this, but you also get the pdf which most companies charge "extra" for a "bundle" somesuch. So, if you don't want to wait, you can print your own proxies while you wait the last 60 grueling days - and get There Comes a Reckoning in the meantime to tide you over.
Ergo, this is a well-spent 40 bucks!