could you explain what the word opel means? i always thought it was "opal" i checked dictionary.com and couldn't find a meaning, however it looks like a car model? from searching http://inventory.overture.com/d/sear...ry/suggestion/
as such! i don't really know if there's much of a market, you will probably know better.. from the looks i would say around $15-$20 + reg fee from my research done.
you are on the right path with the armytools.com domains, with the right potential leads i would think around $30-$35 + reg fee.