Complex sentence: This may discourage some sniping because another bidder can simply purchase the item outright while the sniper is waiting for the auction end time, even if a successful snipe bid could win it for substantially less than the Buy It Now price.
Split into simpler sentences: This may discourage some sniping because another bidder can simply purchase the item outright while the sniper is waiting for the auction end time. Although if they did snipe for the item they could get it for substantially less than the Buy It Now price.