@classmethod
def get_available_sellables(cls, store):
    """Get the sellables that are available and can be sold.

        For instance, this will filter out the internal sellable used
        by a |delivery|.

        :param store: a store
        :returns: a resultset with the available sellables
        """
    query = cls.get_available_sellables_query(store)
    return store.find(cls, query)
