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Amazon made $1 billion through secret price raising algorithm -US FTC
(www.reuters.com)
This is a most excellent place for technology news and articles.
You're forgetting one thing, Amazon has no real competition. Do you have a cloud service that makes you profit hand over fist so that you can dump that money into a loss leader service like amazon delivery?
No?
Well then they're going to undercut you to the point of zero profit margin to suffocate your business.
eBay all the way, boys and girls.