Our estimate came up a bit higher because of the engineering fees. But you’re in the ball park. I am guessing books will be more than $645/yr in engineering. One of S’s math books this year at a dual enrollment was >$100 used. I also added in travel and incidentals to my estimate. But w/o the travel and incidentals, I am estimating $6465 freshman year and $12,540 sophomore year assuming on campus housing.