Brochure design

Hi,
I wanted to know how much to charge for a brochure layout with pictures and text for a high school open house. It is about fifty pages. They are thinking of 5-6 hundred dollars. Does that make sense.
I need to give them an answer so if someone can help me out it would be greatly appreciated.

Thank you

50 pages is alot of work! Are most of them image collages and simple page design. $500-$600 seems too cheap IMO unless most the pages are very simple and easy to throw together.

What is more reasonable?

that gives you $10 per page at 50 pages for $500 approx,.
do u think you can do each page in 30 mins cause that’s about what you are thinking to charge (at say $20 per hr) ? I’m not sure i could!