Current bid equals the second highest bid plus the minimum bid increment. It is important to understand that another user may have a significantly higher, hidden proxy bid for this item. Furthermore, the seller may have a reserve price set, such that if the reserve is not met, the item will not sell. It is not advised to wait for the clock to run down to bid up. Nor should you assume a vehicle is about to sell for an unreasonably low price. Click here to understand how proxy bidding works.