Very impressive, especially considering how cheap (arguably) Iron Maiden tickets were compared to a lot of those other bands.
I was at the barrier for two of the three shows I went to in 2017, and they cost me $120 each. Which, really, is nothing with how ridiculous some of those ticket prices are.
To be on the field at Busch Stadium for the Metallica concert was $400-500, and front row Guns N Roses was around $750. No, I did not pay these personally, but I remember it was what the seats were priced at when I browsed them. And while I didn't end up going to the show, I looked up tickets for the Roger Waters concert from St. Louis and the closest seats were also up in the $600-700 range.