If you are mechanically inclined, you could take the shock/spring assemblies (they're not really struts) off yourself and then take them to a garage to have the springs replaced. It's not that difficult and it would save you from being charged a bunch of labor time. Here in So. Cal., my guy does does the 4 spring swap for a hundred bucks.
I've done it a few times on different LS's. Air tools make the job go faster, but are not required. A extra pair of hands is a big help too when it's time to re-install them. One person holding the shock in place while the other starts the nuts on the studs up top.
That's what wives and girlfriends are for.... Right?
And you will still need the 4 wheel alignment too.