high pressure line replacement

AC is not working, again. After using a can of stop leak, I discovered that my high pressure line is leaking. I viewed some other BBs and evidently this is a common problem on 2000 xterras. Has anyone ever attempted to change one of these? Is it more cost effective to let the dealer or a local AC shop do it?

I had mine replaced at a local shop. I think I paid a total of about $200 for a new line, labor, and recharging the system.