Must've missed that post. Yes, they can. Even if you're a Prime paying customer, whose main purpose in addition to fast shipping is to to allow you to return things without hassle. See the letter I got below for returning ~$100 worth of shitty merchandise. Mind you, I did not violate any terms or conditions and there was no misuse whatsoever. I replied and got back a very confusing, generic email that didn't answer any of my questions. I figured it was their way of telling me they don't want me as a customer.

Since this is the way Amazon treats its customers, Amazon can go fuck itself. I don't plan to ever buy anything from them again and I strongly urge people to think of the ramifications of this happening to a business run on AWS. I'm currently working on moving our company's infrastructure off their system and writing a blog post about it.

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Hello,

We have noticed that you have returned a large number of your orders. While we expect occasional problems with orders, such large numbers of returns can suggest that customers are unaware of our return policies.

We want to call your attention to our returns policies because repeated misuse can result in the closure of your Amazon account. To learn more about our policies, search “About Our Returns Policies” in the Help section of Amazon.com.

If there is something we can do to help solve any recurring problems you are having with your orders, please reply to this email to reach an Account Specialist.

Sincerely,

Account Specialist