Well, the Wayback Machine saved the page of Century 21's return policy for 11 September 2020, and it is as I remember it, and does not say all sales are final.

Also, the sales rep had clearly been instructed to say there is a "banner" on the site saying all sales are final. Looking at the site today:

* I could find nothing on the front page saying anything about sales being final, just about sales going on at retail stores and not online.
* On the returns page, it does (now -- not as of when we shopped) say all sales are final, and in large letters (though I don't think it constitutes a "banner", but okay). I don't recall how I got to that page, as there's no obvious link to it from the front page.

I'll screenshot the Wayback Machine's info, as I expect I'll have to dispute the charge.
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