'97 E300 D for sale by original owner

[123boy]

Hello to all,
Looked at this car today. Very nice condition. Ran and drove really well.
Was hoping to get some "pro's and con's" in relation to possible ownership.
The seller will def take less. Have no idea what to "look for" or be wary of.
Inline 6, no turbo. Minimal rust, no rust in the "spring perch" areas.
Any and all opinions (especially price/value) will be greatly appreciated....
Thanks!

https://pittsburgh.craigslist.org/cto/d/ambridge-mercedes-300-diesel/7216720003.html