As for a price, I'd check over at forcbodiesonly and other sites/forums/groups for pricing. I know I dragged a few of them around for ages, no interest, but that was several years ago. I've seen 70-71 hoods advertised locally in the $250+ area, which seems reasonable, but don't know if they sold.
They are a cool looking hood. It looks like $250-500 is the about the correct range depending on condition. I saw the indicator lens assemblies going for $60-75 for a pair.