I feel like the content provided by nwexam.com was worth the money. I've sat through the official Juniper Training at https://learningportal.juniper.net/juniper/default.aspx, went through the modules and sat through the voucher assesment test modules qualifying for the test discount. When I sat the JNCIA-SEC exam the first time, I did not pass on my first attempt. The exam questions likely required a deeper understanding of the content than I was prepared for. NWEXAM study materials helped to provide areas of study from a different perspective, which I feel, was able to help me pass on my second attempt. Given, I'm not a security person persay, so I've never dug deeper than scratching the surface of the processes involved in security. NWEXAM did a good job. I felt much more confident in not only taking the exam, but understanding the concepts taught through their testing engine. I had a feeling of, "I passed this test" before clicking the button to submit.
Thanks NWEXAM. Going to try for the JNCIS-SEC exam next.