Those are both absolutely insane, especially the hand-held Tiger game which can be had for less than retail if you look in the right places.
Click on the link to the specific bids, and you'll see two Ebay newbies are fighting each other over the 1986 box game. Any battle back and forth is an Ebay seller's dream, but the fact that they're both new to the system would make me very nervous about actually collecting that outrageous price from either of them.