您参与了一次针对体育广告资源的次高价格竞价。您是出价最高者，出价为 5.00 美元。次高出价方的出价为 4.00 美元。 作为竞价中的胜出者，您将为这些展示机会支付多少费用？

In a second-price auction, the winner pays a price equal to the second-highest bid plus a small increment. In this scenario, you are the highest bidder at $5.00, and the second-highest bid is $4.00. Therefore, you will pay $4.00 plus the smallest increment (typically $0.01), resulting in a payment of $4.01. This mechanism ensures that the winner pays only slightly more than their closest competitor, encouraging bidders to bid their true valuation without fear of overpaying significantly. Paying $4.00 would mean you pay exactly the second-highest bid, which isn't how second-price auctions typically work with the increment. Paying $5.00 would be a first-price auction model, where the highest bidder pays their full bid. Paying $5.01 is more than necessary in a second-price auction.