They range from $850 for front row (opposite judges) to $295. $695, $555, and $420 are the three other options.
$850 for front row, $695 for the first few (5?) rows and $555 and $420 (ends) for the rest of the lower bowl. $295 for second level.
Oh for the days of yore! Oh well, I think my last prime seat U.S. Nationals all-event ticket was around $300, but that was many moons ago (2000 to be exact). In 2009, I only attended a few events, so I did not purchase an all-event ticket, probably because I couldn't afford it.
Attending Nationals though, I found to be such an exciting and engaging experience. It's cool being able to watch online these days, but nothing can beat seeing events live, and running into skaters and coaches around the venue.