A store apparatus stores a point calculation method that is applied
usually, and stores also specific combinations of commodities names, as
well as a specific point calculation method that is applied to those
specific combinations. When an order of commodities is received from an
ordering apparatus, it is judged if those commodities are one of the
specific combinations of commodities When it is one of the specific
combinations, points are calculated using the specific point calculation
method. By making the specific point calculation method more advantageous
to customers than the usual point calculation method, it is possible to
excite customers' will to purchase the specific commodities.