buy it from the scratch-and-dent shelf at Creality

This sounds interesting… so where is it? There’s no link in the article.

*Edit: I found it: https://www.creality3d.store/products/used-ender-3-ender-3-pro

They have used machines which are basically unvetted Amazon returns, no guarantees at all, and refurbished machines which have been fixed up and tested and come with a 1-year warranty.