You missed the bait. That is supposedly the one and only copy signed by Joe Schuster, Jerry Siegel and Joanne Siegel. The two creators and the one's wife who was the 'inspiration' for Lois Lane. If its true, who is to say what its worth. A unique item has noting to compare value to, and is only given a value when its sold/bought. That being said, I think its ridiculous what some of those old comics can sell for, unique or not.
If anyone actually gave him a million dollars for it, Im sure he'd buy a plane ticket and hand deliver it. An item of that value wouldn't simply come down to the usual
ebay rules. If the need arose, it would go to court, and damage or loss in delivery could easily come down to the shipper's responsibility.