みるしる: Japan’s prices, item by item

Field notes

The region selector defaults to Tokyo’s 23 wards and describes additional coverage as prefectural capitals and cities with at least 150,000 residents. Visitors can sort items by daily movement or by rises and falls; the interface also includes a basket control and a seasonal calendar. The page says its graphs cover five years and that its sources are government statistics, though the extracted evidence does not show chart values.