Complex sentence: Twaalfhoven originally sold his BobCAD-CAM software from the trunk of his car to manufacturing shops that wanted to automate their programming process but couldn't afford the massive price tag that accompanied CAD/CAM Software in the mid- 80's.
Split into simpler sentences: Twaalfhoven originally sold his BobCAD-CAM software from the trunk of his car. He sold to manufacturing shops that wanted to automate their programming process but couldn't afford the massive price tag that accompanied traditional CAD/CAM Software in the mid- 80's.