Yes, to make the most any Prime Day deals, you do need an Amazon Prime account. As the name of the event suggests, you will need to sign yourself up for Amazon Prime to take part in the event. If you don’t want to pay out for an account membership, then there is a work-around. Amazon is currently offering new customers a 30 day free trial, so you can use the trial for Prime Day and simply cancel it when the event comes to an end.