Usual stuff when dealing with Amazon - never use the same browser/IP address/geographical location with two different accounts. Use different VPNs for different accounts/companies. Doable. Only the paranoid survive.
> and you have a way to ship those orders separately from Amazon ones
What do you mean by this? How likely would it be for a seller to even be in a position to ship orders from multiple websites in the same box? And how would Amazon find out without buying things on competitor websites and checking return addresses?
>How likely would it be for a seller to even be in a position to ship orders from multiple websites in the same box? And how would Amazon find out without buying things on competitor websites and checking return addresses?
Well firstly if you do something stupid like FBA multi-channel fulfilment, AZ may catch on. I don't mean shipping different orders together, I mean shipping from the same warehouse.
If the value is significant, I wouldn't put it past amazon to place a test order. Probably unlikely, but when you're breaking your business agreements, do it properly.
I have heard horror stories of people doing well selling some product buying from the manufacturer, and Amazon went to the manufacturer and bought on condition they don't sell the product to anyone else.
But then don't complain if Amazon finds out and bans you.