Their mistake was not to mention that the hardware isn't built entirely by them (mainboard is bought from China).
However, I don't think it's fair (the backslash). They bundle the hardware with a software, they will handle the support, future updates so it's not like they are simply reselling a Chinese item. If this sounds outrageous to you then you should be outraged by 99% of the electronics items sold (because you can always buy them cheaper in China).
I'm not a supporter of this anonbox but I don't get all the outrage.