As a small company, it's important to us to focus our development resources on what will impact most customers. When it comes to MacGourmet and MacGourmet Deluxe, 90% of our customer base is using the Deluxe version. With those demographics, it just doesn't make sense and is not very efficient to support two products (with mutliple builds every update for the Mariner version and the Mac App Store version) moving forward. MacGourmet 4 customers will have a special path to MacGourmet Deluxe 4, if they choose to upgrade. Contact firstname.lastname@example.org for more information.