Hi Patrick:
Sounds like you have not ordered big and heavy stuff by mail in a long time...yes, shipping is expensive for oversize and heavy things! Real expensive if you have to have a freight shipment which maybe is what has to be done with your fenders. Sometimes you can get the freight shipping charge reduced somewhat if you get it delivered to a business instead of your home. Shipping stuff from CA to come east of the midwest is much more expensive than shipping from within the midwest to east.
Regards,
Henry