RE: What should I do here
I bet if the buyer is willing to pay 2=3 times the current shipping costs for shipment by something other than Greyhound it would be there already. Usually when a large oversized package is being shipped Greyhound is the most cost effective way to go but not the most expedient way. I think the buyer needs to be either more patient or willing to pony up lots more money to pay for his impatince!