Only fools end it early if it looks like they'll get more bids... if you were the only bidder on some unwanted item, like a copy of Madden 97, then the seller might be tempted to end early.
Zelda CE still fetches a pretty price so unless you get absolutely lucky with a last-minute snipe or find an uninformed seller offering a complete copy for $20 shipped, I think you'll best find your luck at pawn shops and thrift stores...
Also, it seems disc-only copies and one disc+case have sold for about $20 shipped recently, with many complete copies ending up in the $30 - $40+ shipped range. eBay may not be your avenue to obtain this game.