I'd go to the sound of the Underground just to see Amon Amarth as well. But the thins is, on top of the price, the shitty bands, and the wannabees that the other bands would atract, I live in CT and the closest show is Jersy. I don't understand why they're skipping NY and Boston, there's plenty of wannabees there.
I'd love to see Amon Amarth by themselves though! Unfortunetely they proboably wouldn't change the stage like they did in the Wrath of the Norsemen if they did a concert in the US, but it'd still be fun to see them. I'd pay good money for that!