$170 plus some $90 proprietary software. Two textbooks were the $170 expense, used, from Amazon. Two courses don't have textbooks - they deal with ANSYS (we use the extensive help menus as a textbook) and the other is a CAD systems course, mainly Pro/ENGINEER. The fifth course, Heat Transfer, uses the Thermodynamics textbook from last semester.
The $90 software is some project simulation thing for a project management course. It can't be purchased used - the licenses are one-time-use dealies.