This usually happens by design rather than by accident, an agent intentionally pricing at or slightly under the current benchmark of $444,700 to generate multiple offers, rather than pricing high and hoping for one strong buyer. It works best in a well-priced, well-presented home in a neighbourhood with genuine buyer demand.
Selling over asking does not remove the usual conditions from the winning offer, financing and a home inspection typically $400 to $600 among the most common, so a seller still needs those conditions satisfied before the sale is final regardless of the price achieved.
Whether that strategy fits your home depends on current comparable sales, not a general rule. Get your hand-reviewed valuation from Joel Dyck.