I find this game well worth the money. I would recommend getting a physical product as the cards are very well made. That being said, printing your own cards allows you to take them anywhere without worrying about them being damaged or lost. I have used this set to play at work and camping.
I would not recommend this for a primary rpg system and that is not what this system attempts to do, but I would recommend for a oneshot or something for a night of "beer and pretzels" fun in between your more serious games.
It requires very little prep and the way the cards work allows for a lot of improv. When all is said and done, it can help you tell a great story.
My one complaint is that it doesn't seem to have a website or anything any more.
In summary, worth it for a secondary, fun, and easy to set up game....