What’s a fair price for magnum manifolds?

I’ve been trying to find a set of 5.9 magnum manifolds to go on my 340 and into my 65 Dart. I found a pair however the yard wants $65 apiece for them. That seems high since I found another member who lives about an hour and a half or two hours north of me who said I could have them for $20 apiece. Normally I’d make the drive however in Los Angeles a 2 Hour Dr. can easily be four hours. What’s a fair price for a set of manifolds?
$65 a piece is fair. You can find them here but will pay that much each for shipping
$20 each is a steal but a 4 hour round trip is a bummer.