@JAF09 you do understand that you would need every line item on this poster’s Profile form in order to do a maybe comparison with your own situation. I think that’s asking for a lot of information.
Are your parents divorced? Are they self employed or do they own a business? Do they own real estate other than your primary residence? Are you an international student? If NO to all of these, run Harvard’s net price calculator to get a decent estimate on your net cost there. For the 2022-2023 academic year you will need 2020 tax year information.