Being a tutor of Network Administration students, I bought their Diamond pack that gave me access for 12 months of all the Cisco Exams including others. So I have had around 50 students in the past and I used Certmagic's content for CCNA and CCNP to assist them and every time one of them sit for an exam they come and say they got the questions from the content so I must say this company is very helpful for the tutors. Those students inform their friends and refer them to you thus you get business.