Yep, I agree. Any mechanic can fix this by replacing the axle.
If a leaking axle boot is found
before the noise starts then a new axle boot is usually enough to fix the problem. However, the clicking means the axle needs to be replaced.
I suggest taking care of this soon. If an axle fails while you are driving, you will be stuck on the side of the road waiting for a tow truck.
Here is random video I found showing the procedure. I'm not suggesting you do this your self, but if you have knowledge of the procedure before taking it to a shop you are less likely to be taken advantage of.
https://www.youtube.com/watch?v=8JbWZGsppl8