Is a $12k net cost still a lot?

I got my financial aid package from Mount Holyoke College and the initial price was almost $90k!! After scholarships and grants, my net price was around $12k a year. I don’t know much about the cost of college, so I want to know if $12k is still a lot. In comparison to $90k it seems like I’m getting a very good deal, but the difference is making it hard for me to grasp.