It is beneficial for both, buyers and the sellers. Some of the online auction systems attempt to discourage sniping by automatically extending the auction time if a last-minute bid is placed. This approach leaves all bidding open, and allows the bidders who are watching during the final few minutes to raise the bid, leading to a last-minute automated out-of-control bidding wars between bidders, which can extend the bidding time long beyond what the seller desired, greatly raising the final selling price.