What's this grille worth?

I have a grille from a 70 Dart Swinger that i got in a package deal, i was planning on keeping it in case i stumbled across another 70 or 71, but the last thing i need right now is another car lol. i dont know the market on these anymore though, my buddy told me to put it up for $400, i dont know if thats too much or too low?? its in excellent condition, no broken fins or mounting brackets. Any input it greatly appreciated :) thanks! -Mopow3r