Are these product photos AI-generated?

A marketplace upload can strip out a lot of the clues before you ever see the picture. That's why the seller's original file is much more useful than whatever version ended up in the listing. You can find out how to check if an image is AI-generated here: https://checkifitisai.com/image-detector . Use the original file when you can and see what metadata or provenance information is still attached to it. If those details are missing, don't treat that alone as proof either way, because uploads and messaging apps can remove them too.

Those changing details would bother me more than the perfect lighting. A seller can clean up a room or edit a photo, but a handle, chair leg or wood pattern shouldn't keep changing between shots. Ask for one fresh photo from a specific angle, preferably with a handwritten note or another object next to the furniture. A reverse image search is worth doing too, because the same staged picture may already be sitting on another listing or store page.