I feel like OP's quote was saying that the "seller" is beholden to amazon because it's 20% of their business. Amazon realizes this and then puts the proverbial squeeze on them and forces them to lower their prices. What I was saying was we were nowhere near 20% and amazon still tried to squeeze us to a point not being profitable. So what I'm contesting is that amazon is smart about when they try and get more money out of you. They are trying to do it constantly on the 1p platform regardless of the size of your involvement with them.