They are not inexpensive, but maybe you could explain how you intend to use it and some of us could give you an idea if the MBA would be a good fit for you.
Are you asking if it is worth if in comparison to the 2013 MBA? If so, then no, it is not worth it.
If you are asking if it is worth buying a new MBA for you, then you need to be more specific. What work do you do, what is your budget, what computer do you use right now, how mobile are you?
4 days ago he posted on another thread he was going with the 8 GB memory on the macbook air, and now 4 days later he asks if the air is worth it. Love these new guys