Keep in mind this is for an international student paying out of state tuition with no aid. The 50-60k number is more reasonable for US citizens, <30k if you're coming in with a scholarship. 2 years is the average amount of time for a masters degree. It's typically like 2-3 semesters of classes, then thesis or project. As for credits, my masters segment was 36 credits, while my catch up undergrad segment was 28 credits.