In the classic car market coupes are almost always worth more than sedans…but there are a few notable exceptions, such as the mid 60s Lincoln Continental (the suicide door equipped sedan is way cooler and more expensive than the coupe) and possibly the E36 generation M3. The 2-door M3 coupe was certainly more common, but a 4-door E36 M3 5-Speed (aka the E36 M3/4/5) does seem to command a premium due to its additional usability and rarity. Find this 1997 BMW M3 4-Door offered for $7995 in Brattleboro, VT via craigslist. Tip from TeleArrow.
From the seller:
1997 bmw m3
cylinders: 6 cylinders
paint color: silver
title status: clean
Car has been in heated storage for several years…… very good condition….. 5-Speed Manual Trans.
See a better way to drive a 5-speed German driving machine? firstname.lastname@example.org