It depends on how much you can invest on it – The money and your time.
To answer this question, we also need to know about your goal. You can continue with other Cisco certifications or maybe, you can change the line and mix it with something else.

Let’s have a look, which jobs openings are on the job boards to utilize a CCNA certificate.

OnTheCCRoad
I- You got only CCNA cert and you are in the way to be a network professional
This means that you are beginning your journey to become a network expert. You can work as junior admin in an environment where experienced network professionals work. You will do some daily task including monitoring, hardware installations (as the second guy), and routine things like configuration backup etc. In this position you cannot earn too much money, but it is a good investment for your bright future. If you spend one or two years while preparing for your CCNP, you will have the chance to choose the position, which you desire and also you will get a good income boost. CCNA certificate is a mandatory and foundational step for CCNP.

JustCCNA
II- You got only CCNA cert and you don’t want to invest more on it
If you say “CCNA is enough for me and I don’t want to waste more of my time and money for certifications”, then you can find a job in a mid size company as system/network admin. You have to look after windows servers and maybe some other systems. You can make an acceptable amount of cash and work in an environment without too much hierarchy. If you are good in relationships and you are practical in mind this is exact job for you. CCNA certificate is sufficient for this position. It will be very helpful in your career.

MsCCNA
III- You have got CCNA + some Microsoft certifications (like MCSE) + experience
In this case, your dominant specs are system admin specs. You already proved yourself in this area and can work in a Multinational Enterprise branch as senior system admin. You can cover network admin tasks with your CCNA certificate or better, in very large structures, it will let you to lead a team both system and network admins included.

NetSecCCNA
IV- You have got CCNA + Security certification (CISA+GIAC) + 3-4 years experience
You can work as System Security Engineer in Enterprise environment or you can work in a consulting company as information security auditor. Your CCNA certificate will let you have more expertise on network related issues and support your success.

ArchCCNA
V-You have got CCNA + more than ten years experience on Windows & UNIX
If you have development skills, project management skills and you have spent considerable number of years in several areas of IT business, then CCNA is not a big component in your skill set, but at least it shows people that you are still in touch with practicalities of network operations and it can help you achieve Enterprise Architect position.

Illustration of CCNA Career Paths

As a step or as a component, CCNA is a valuable item in your personal inventory. It is worthy to get it and anybody can get the certificate, but you need other skills and experience to utilize it to the maximum extent. Initially you cannot expect high paying jobs ,but with some experience ,you can climb the ladder of success. For students, I strongly recommend participating to Cisco programs in colleges. This will help them to make an easy start for their careers.

If you want to see real jobs for CCNA holders, go to our job board and write CCNA in keyword box and click “Search Jobs”.

To get the answer of “What is a ccna worth?” as $ dolar figures, please have a look at below links.
Salary Survey Report for CCNA Certification
2006-2007 TCPMag.com Internetworking Salary Survey