Demand to see the Material Girl live was so high in the District that Live Nation decided to add another show. Madonna will be rocking the Verizon Center September 23 and 24. Of course, it won’t be cheap. Tickets are running as high as $300. Is that even worth it? If there was a guarantee that she would play all of her early hits and less of her less-than-stellar new music, it might be. Tickets go on sale Feb. 21.