But of an obvious one for FBA sellers, but camelcamelcamel should be one of your first places to start for product research. I mention it because you may not have noticed that you can select any of the marketplaces, including Japan.
You will soon find that there are a number of products that it won’t show charts for, because of a lack of data. But remember that many of the reasons for the lack of data, are also the reasons the Japanese marketplace has a low barrier to competition. No data, might not mean low sales. It may show an opportunity.
*This post originated from a post in the Amazon Japan Facebook group, “Amazon Japan PL”. The information may well have changed by the time you read this. Please check the DATE of the post before you make any decisions based on this information!