Here are some examples of the validity of ELP buy orders: New ELP buy orders can’t exceed the non-ELP best buy price Time Type Quantity Bid price Ask price Quantity Type Time 10:01 ELP 100 91 (cancelled) 110 50 Limit 10:00 10:00 Limit 1 90 10:01 ELP 100 90 ELP buy orders will become invalid for matching but still pending if they exceed the non-ELP best buy price Time Type Quantity Bid price Ask price Quantity Type Time 110 50 Limit 10:00 10:01 ELP 100 90 (invalid) 10:02 Limit 1 89 ELP buy orders