I agree with the others on being patient. $4500 seems quite high. My 84 Eurospec 240D was only $2200. As with old cars, expect to put money into them to take care of neglected maintenance and repairs.

One selling for $4500 better be in perfect condition, need nothing, and have every maintenance and repair record since new.

So far I'm only out some $71 in parts for baseline maintenance and repairs. I'm also lucky to have a dead 240D to rob for parts.

So far I've done the following:

-Oil change including filter
-Fuel filters
-replaced clock (from donor car)
-temporarily replaced speedometer with unit from donor (I still need to get the original shipped out to fix)
-Replaced oil/fuel/temp guage pack due to faulty rheostat for cluster lights (from donor car)
-found water leak due to loose hose clamp
-found nut missing on positive battery cable. Swiped one off of donor car.
-Valve lash adjustment
-replaced connector end to instrument cluster due to total failure of interior dash lighting. (from donor car)
-installed component am/fm/cassette/CD changer unit from donor car.

I still need to do an injector rebuild and timing chain stretch checks to address smoky, raw fuel smelling idle.

The car still hasn't used a measurable amount of oil.