Wow, have not posted about my Amazon Merch sales in over 6 months, I am sorry. Amazon Merch is actually driving me rather crazy. There are weeks with many sales and more weeks with no sales. I do not understand the fluctuation behind it. Anyway, here are the sold items from June 2019:
As you can see, German amazon.de dominated the summer month regarding sales. Which Amazon marketplace (US/UK/DE) is your best one?
Marcel-Breuer-Straße 12, 80807 München, Deutschland