NOS 1973 DUSTER DART TWIN SNORKEL SCOOP......WHATS A FAIR PRICE??

I sold an as nice a used one and you could get with all studs/nuts intact, and cracked, but still pliable grommets for $350 + shipping not too long ago.
Still have the original hood and a new AAR brand scoop, which normally sells for $325 or so.!