Date registered: Oct 2012
Vehicle: 1968 250S, 1991 300se, 1998 SL500, 1977 450SEL 6.9. Past MB's; 300SD, 300E, 300TE, 190E, ML420
Mentioned: 6 Post(s)
Quoted: 425 Post(s)
just from your profile pict it looks decent.
search this forum for carb / zenith rebuild, that question come up a lot. you will pay someone else @$500 to rebuild them or you can buy parts for about $100 and do yourself. when you get to that point there are great resources for setting them up correctly.
If everything is decent that a good scrubbing work bring back, then go for it at $500 is a good price.
depending what you want to do with it and how nice you want to make it, check out all the rubber bits, door seals, window seals, ect. these can add a bit.
assuming it doesnt have rust issue from back window into trunk and front cowl into footwells this seems pretty good. to get running well you might plan for upwards of $1000, that would be servicing everything including carb rebuild. still not bad to have running car for under $1500
more picts would help if you can do that. just click on the paperclip above where you type message and upload them.