Settlement payment device and unmanned store system

A cost calculation and payment device for performing processes related to cost calculation of merchandise items that a user has selected from a sales area and face authentication for payment, the device comprising:

• a main body provided with a placement portion on which the user places merchandise items;
• a first camera configured to capture an image of the merchandise items placed on the placement portion;
• a second camera configured to capture an image of a face of the user;
• a controller configured to perform a process related to cost calculation by recognizing the merchandise items in question based on a merchandise item image acquired by image capture by the first camera and to perform a process related to face authentication based on a face image acquired by image capture by the second camera;
• and
• a display for displaying a cost calculation result and a payment result acquired by the controller,
• wherein the display is disposed in a vicinity of the placement portion, and
• the second camera is configured to capture an image of the face of the user looking at the display.