When I used to sell on amazon, I encountered an account that was listing my privates label listings at really high prices with really long shipping times, and they always only had 1 item in stock. I got suspicious and looked at their store and all of their items were the same. I even encountered a reddit thread where someone else was going through the same thing with same seller at the same time as me. When I ran out of inventory on item, their listing would disappear automatically hours later. I am assuming they used a software to do this as they had 1000's of items. Any know what software they might have been using?