Not having power windows is ok. My 300D is M/T with manual windows, no sunroof, no front armrest, no rear headrests, no rear seatbelts. Though it is powersteering and the power locks are now electric (not vacum) in the interest of reliability and to make it easier to interface with the aftermarket anti-theft system.

For me the price is ok. Just factor in how much you need in restoration. Is the a/c OEM or converted already. Mine's a Sanden system for easier maintenance. Though the blower is kinda weak already (very old blower).