Alignment issue

Well this is my first post here and unfortunately its about a problem. My front passenger side wheel's allignment is pretty bad (the other wheel's are also in need of work, however they are nowhere near as bad). I took it in to have it aligned, but the tech said it couldnt be aligned (he improved it a little, but its far from perfect) due to the eccentric being shot. He said the parts would only be about $30, but the installation would be quite expensive. I dont have much experience working on suspensions, but after looking at the upper control arm, I couldnt figure out what would be so difficult about doing it, and therefore why I couldnt do it myself. Im fairly mechanically inclined.

I was just wondering if replacing the eccentirics is something I could do in an afternoon with basic hand tools, or if I should just bite the bullet and pay to have the work done?
Any advice would be greatly appreciated, as well as a place to pick up the necessary parts if the work isnt way above my head.
Thanks