Does prog rock still exist like how it used to w ELP back in the day?

Of course it does. I mean, it's not really mainstream anymore, but there's still plenty of progressive rock bands to be found today. Spock's Beard, The Pineapple Thief, Karnivool, Elephant9, Riverside, etc. The Mars Volta is my personal favorite, even though they don't play progressive rock anymore. But if you like wild and eccentric prog rock like King Crimson, you'll love TMV.