Also observing this-- the Amazon's Variable & Dynamic Pricing Strategy seems to alter prices to improve revenue. Wondering whether the pricing policy can be learned? How long do you wait before they drop the price?

You can use a browser extension such as Honey that tracks prices and lets you know if the price is lowest and/or cheaper elsewhere. Just have to trust the security and privacy of it. List of those types of extensions here: thepointsguy.com/guide/shopp…