Depends on your area, and the demand. And exactly what you're selling, engine only, complete package. Though I have to ask, what's a 205? The only 4 cylinder engines Merc produced were 2.5L - 120hp, 3L -130/135/140hp and the infamous '470' (3.7L that came in 165, 170, 180, 185, 188, 190hp)...
Only 205 I know is a 4.3L V6, w/4bbl (1985 to 1996)
Chris.......