Starting price is 5000 yen and your bid 10000 yen.
There is another bid of 7000 yen.
You won the auction for 7250 yen (because the bid unit for this auction is 250 yen)

Your maximum amount is kept confidential from other bidders and the seller.The system compares your bid to those of the other bidders. And you could pay significantly less than your maximum price! This means you don't have to keep coming back to re-bid every time another bid is placed.