you can do it your self if you'd like... Your strut cartridges will cost between $20-$30 each depending on the brand. The three nuts on top of each strut tower plate come off revealing a 24mm nut, that you will either need the special tool to remove (most auto stores will rent you the kit), or an impact gun, because the strut shaft will spin without the tool in place to hold it while you release the top nut. The rental kit also comes with the tool to remove the nut that holds the catridge in the strut tower (no, you can't reach it without the tool). They refund your money when you bring the kit back. Good luck getting the top nut tight enough to keep the cartridge from rattling with the rental kit though. (that's the only drawback) mine rattled like a mofo...
I ended up taking an impact gun to it. (nice and tight now!)