In many ways this is an interesting business model - the author is largely acting as the financial backer and publisher, whereas everything from product design

In many ways this is an interesting business model - the author is largely acting as the financial backer and publisher, whereas everything from product design to manufacturing happens in China. I wish the author tracked their time spent on this. The labor cost might be a killer overhead. Being very lean on process is probably a major factor in making it pay off.