To enable a client to easily set various wedding events within a pre scribed budget and further to effectively present sufficient originality.

Concerning various wedding events requiring usually an extremely large quantity of setting, the pictures of a client side computer P1 can be successively switched and inputted for every common setting item and every time contents are inputted to the item displayed on each of screens, the total cost corresponding to item contents inputted up to the moment are automatically calculated and displayed one by one.