For a small but reasonable sum, I'd be happy to take over running the online marketplace for him. I have a number of improvements I'm ready to make...
Or at least make a persistent toggle switch in the UI where you can say "I never want to see a single product that is not shipped-from-and-sold-by-Amazon." And end commingling with any product that Amazon itself sells, if that is occurring.
That's why they don't let morons like me run big business :). I care about things that only matter when you are a small business apparently.