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> driving prices to rock-bottom

No. They've been driving cost to rock-bottom - not price. It's margin they're after.

Their 'dynamic pricing' is the biggest issue. It's completely opaque to everyone except Amazon's algorithms that want to maximize margins/profit.

E.g. frequently items will be at some discount level one moment, but then based on some trigger (e.g. increased views) it leaps up. I've have many cases where I found an item on sale - sent the link a friend and by the time they go look (sometimes just minutes later) the price has jumped.

Look at camelcamelcamel and see the wild price graphs - and then understand that Amazon doesn't even share many of the intraday price changes with 3rd party services.

FWIW, Amazon does not do dynamic pricing for offers from 3rd party sellers.

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