Amazon binds its sellers over to something called Most Favored Nation status. That means that sellers can't offer their goods more cheaply than they do on Amazon – even if it costs them (lots) less to sell in Target or direct from their websites. This means that every time a seller adds a dollar to their Amazon sale price, they have to add a dollar to the price of their goods everywhere else, too.
After a bunch of state AGs filed lawsuits against Amazon over this, the company promised to cut it out.
They lied.
A new filing in California's suit against Amazon reveals that sellers live "in constant fear" of retaliation from Amazon if they allow their goods to be sold more cheaply elsewhere.