<p>I think that the other price and the 6 units is for people who are taking part time classes out of personal interest, and not working for a degree.</p>
<p>Zidane, count on 4 years for a bachelor no matter if it's on quarter or semester. Students in the early years in a quarter system often take 3 classes X 5 credits each. For a semester system they often take 3-4 -5 classes of 3-4 credits each. There are some, but not many schools where your classes are only 1 credit each and you take 4 classes per semester. It really isn't too important how many credits you need to graduate. It's more important to decide if you want to be able to spend longer periods of time on a subject (semester) or would rather take shorter classes (quarters.)</p>