Earlier quoted context omitted.
Those blog posts are a good start. I was referencing the full pricing page for s3 that breaks down by region and class. AFAIK there are some third parties that track the granular data, but it's not preserved anywhere on the AWS page. A lot of price decreases also might have happened silently (without a blog post) or as de facto decreases (widely but privately negotiated, e.g. "sticker price").
> I was referencing the full pricing page for s3 that breaks down by region and class. You were referring to the announcements and these announcements are still available. The actual pricing pages of course only show current prices. What would be the motivation for AWS to show outdated prices there as well? No other company I can think of does that and given the complexity of the pricing structure for AWS services th…
The only rule of thumb is what is posted on the pricing page is supposed to be what you get charged. No APIs exist for the most part, and the actual charges can sometimes differ anyway (e.g. grandfathered pricing etc.)