The Bersa web site shows they are out of stock (cost was $30.00). Your only help may be from a dealer or gun show. Maybe someone here may know where to get a Bersa magazine.
Sorry wish I was of help to you.
Unless they changed you can place order at Your one-stop shop for all things Bersa and Firestorm and placed on list . When mags come in they fill the list first. Was getting shipment couple times a month but with the BS now don't know. I might need to call a few people and see what going on. I do know world stop for shot show in vegas .