I just had the same conversation with
sales@onyx-international.com, unfortunately with a very different outcome.
I did not ask for a commercial sample (since I am not a retailer), I simply asked if I could buy a unit directly from them.
They offered the retail price of USD549 direct from them, or from Amazon. No wholesale price was offered.
I think you can only get the wholesale price if you are a retailer (or pretend to be one, which I am not willing to do). Maybe it's for the best, as I have been quite happy with the customer service offered by Booxtor over the past few years.