Rather than paying $99/year, I'd like to consider paying once to remain subscribed to the site forever. The site's stated purpose is to link active job seekers with great employers, and thus the 'nominal' fee for the job seekers. Having a lifetime subscription seems counter to that motive, however I've found that if you aren't always looking for a job, then when (not if) the current one ends you will find yourself in a longer period of unemployment than if you had kept your hook in the water, even while happily employed.
Given that the average person (US citizen, from dept of labor) changes careers about 3-5 times in their life, and they work for about 45 years, then the average career length is 9-15 years. I propose somewhere around $261 - $435 (promotional $29 * [9, 15]) for the promotional period, and $891 - $1,485 after that for a lifetime subscription. It would therefore only be a discount if entered into right now, or if one plans on staying in this career for longer than 9-15 years.