price => { sub => sub { $_[0]->price_as_number } },
discount => { sub => sub { $_[0]->discount_as_number } },
obsolete => { sub => sub { $_[0]->obsolete_as_bool_yn } },
price => { sub => sub { $_[0]->price_as_number } },
discount => { sub => sub { $_[0]->discount_as_number } },
obsolete => { sub => sub { $_[0]->obsolete_as_bool_yn } },