Rampow-jp is a Top Rated seller trusted by more than ten thousand Amazon.co.jp customers in Japan. They sell in 家電＆カメラ department from Rampow and RAMPOW brands. They offer Prime shipping for the several dozen products they have in stock.
They are a Top 100 Amazon.co.jp seller, ranked 62nd overall. However a month ago they were ranked 58th.