Colorado students only pay instate price at CC, so it’s only (‘only’) about$14k for them, plus there is a Colorado credit, plus any scholarships. Not horrible but still expensive. Not everyone is full pay but enough are.
But you are going to find that at all the schools you are looking at (BU, Brandeis, CC, even the Florida schools). Some kids will have money, the others will do what they can, work a little, eat out less. My kids had very little disposable income in college but still had a good time. They figured out rides from friends, pitched in for gas, knew how to thrift shop and do things for free.
I had some friends in college who I didn’t even know were rich (and I mean really rich) until after we graduated. They lived like college kids and blended in with the rest of us.