I've seen this myself. I was a seller last year and whenever I found a product to sell with a good profit margin, Amazon would eventually come along and underc

I've seen this myself. I was a seller last year and whenever I found a product to sell with a good profit margin, Amazon would eventually come along and undercut me. Since they can buy in much higher volumes than I, they win. I recommend that nobody ever sell their products on Amazon. Yes, it's a great market and you will get sales. However, all of their seller support is automated and if their automated scripts somehow think you are violating one of their rules, you get kicked off forever. I was kicked off after selling for 8 months with a near 100% track record and great customer service. Why? Amazon couldn't tell me. Their answer was: "Due to the proprietary nature of our business, we can't disclose the reason". They held over $5000 of my money for 90 days. It's lucky I had savings or I would have been in trouble. The customer is also king. I had multiple scammers order over $100 in items, file a claim and get their money back without ever sending the item back to me. Amazon (unlike Ebay) doesn't allow you to ban a scamming user nor do they care. I made them thousands of dollars in my time there and they couldn't even give me the decency of a person to talk to. I'm disgusted by their business practices.