> 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 What would be the motivation for AWS to show outdated prices there as well?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 that'd only confuse users even more.

> A lot of price decreases also might have happened silently (without a blog post)

Do you have an example for that or is this just hearsay?

> or as de facto decreases (widely but privately negotiated, e.g. "sticker price")

Privately negotiated deals aren't regular price reductions as they're only available for customers with a fairly large spend for such AWS services.