Here's how well-attended DT's show in New York City in November 2017 was.
Dream Theater Beacon Theatre New York, N.Y. Nov. 16, 2017 $154,538 2,202 / 2,775 1 / 0 $119, $68.50, $58.50, $48.50 Metamorphic Productions
Now, this is the interesting thing. This being NYC, I actually thought they might have done better in the attendance, especially when it comes to playing Images and Words in full and NYC being a really big area for DT in general.
Oddly enough, when DT came to NYC for The Astonishing tour, they played a bigger venue (Radio City Music Hall) and had more than twice the amount of attendance and generated more than twice the revenue. These are the kinds of comparisons that makes you wonder sometimes.
Dream Theater Radio City Music Hall New York, N.Y. April 23, 2016 $343,203 5,307 / 5,850 1 / 0 $120, $74.50, $59.50, $34.50 Live Nation/MSG Entertainment