"If you change I'll come back" (Score 1)

I don't see the point of saying this. This simply encourages them to do whatever they want, secure in the knowledge that they can back out of it if too many complain. Do you really want chuckleheads that would even THINK of doing this in the first place to get customers to return?

Remember, the competitors are watching all this quite closely. Abandon Amazon, and never return, even if they beg you. Hang them out to dry -- as an example to the others.