I ordered a B-rated, 256GB one, but later I received a phone call saying, "It seems that by mistake I was able to order a product that doesn't exist, but I have an A-rated 128GB one, can I change it?" This was the case. The price was the same and I wanted it in my hands immediately, so I told them I was OK with the change. It was sent out immediately afterwards and arrived safely. I am satisfied with the product as it was very beautiful. I was fine with the change because I had both of the above two products as options, but there was certainly no B-rank 256GB as a product, but I was able to select the capacity when I ordered, so if you could improve that, I think it would eliminate the trouble.