At this time, it isn't possible for a customer to purchase multiples of the same product during a single checkout process.
If a customer attempts to purchase a one-time or multiple payment product that they have already purchased using the same account email, they will see a pop-up notification for the repeat purchase. They can dismiss the notification and proceed with the purchase if desired. If a customer attempts to repurchase an active recurring subscription, the customer will be redirected to their Library.
Still have questions? Let us know your question below to have it added to the list or reach out to Support if you need additional assistance. Thanks for being the best part of Kajabi!