400E has a 119.975 engine
Is the car for sale ? Where are you located.
I MIGHT be interested IF I am close enough to see and drive the car. Got any pictures ?
Regular maint. records ?...
Details of service problems that have been repaired ?
MB Dealer should have offered more than that, unless there is roughness in appearance or repair problems that must be done before they could re-sell it.
Cam chain and guides are a 100K mile expense that should have already be done.
AC working with no history of needing re-charges.
No engine oil or trans. leaks, good shifting?
No lifter ticking on cold start up.?
These would will be the type of items people (or dealers) will look for.
Along with clean interior and good paint.
Luck to you,