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.