My offer is that you send $20US to my paypal account, package the mud flaps/spash guards in a cardboard box, and you take them to your local recycle depot. If they pay you anything for them, you "keep the change".
How 'bout this: I'll trade you my mudflaps for your mudflaps so my mudflaps can sit in your garage, never to be used and yours can sit in my garage, never to be used.
Screw it. Deals off. I like mine better. I'm keeping them."