Absolutely worth the $50 price tag. I felt I got far and beyond my money's worth.
The food, while not substantial (sandwiches, soup, etc.), was quite good, and the drinks were excellent. While the lounge is smaller than other Airport lounges, there are many varied and great options to sit. Because it was so small, it was difficult to escape the noise of the bar.
Several steps above any domestic airline lounge, and even better than the few international Star Alliance lounges I have been to. Hopefully this will force the other lounges to up their game as the Centurion lounges continue to expand.