I agree. The front sway bar is pretty easy. The rear sway bar is harder but not terrible, if you are a shadetree mechanic. Rear shocks aren't bad, but be careful up front with the struts. DO NOT attempt to do the springs without the proper MB plate-type spring compressor (Klann or SirTools). Front control arm bushings require spring removal. Rear subframe bushings require a special tool to press them in & out.
Quite a bit of labor if you're paying for it, IMO. The sway bars should be about 1 hour each by a competent shop. Springs should be about 1 hour front, 1 hour rear, with the proper tools. Front control arm bushings, I dunno, an hour or two at least. Shocks & struts, same thing. Rear subframe work will be several hours though. Hope this helps a little.
Here's some tips on the rear sway bar job, in case you attempt it yourself - you need a couple of hydraulic floor jacks:
http://www.meimann.com/docs/mercedes/Rear_sway_bar_install.pdf
Regards,