went to 20 mobile phone stores from Wednesday to Saturday last week and did a price survey on the iPhone 13 MINI. The fixed price is 80,000 yen, but if you do not buy only a mobile phone and make a communication contract with a mobile phone number, the price will vary greatly depending on the store. By law, discounts of 22,000 yen or more are prohibited, but depending on the store, prices such as 1 yen to several hundred yen and 20000 yen were discounted separately on weekends. I recorded a conversation with a staff member, made a report, and sent it to a research company. I went to 20 mobile phone stores in 4 days, so it was a very tiring and difficult job.