" " Concert tickets for big-production shows, like U2's The Joshua Tree Tour 2017, have become exorbitant. But why? Daniel Knighton/Getty Images If the last concert you attended cost the same as a short vacation, consider yourself part of the global phenomenon of rising ticket prices. With the average concert ticket price for 2018 ringing in at $96.31, (a 14.1 percent increase over 2017's prices), live music fees have far surpassed inflation rates — and probably the growth in your salary, too. But why the skyrocketing prices? And is there any end in sight for fans of live music? The q...