I doubt Amazon itself is the vendor, might well be from someone else, just sold thru Amazon. You can look up the vendor and return policies on the page.

But do you really want to buy something that you might have to return?

I haven't ordered anything as large as a sofa, but I did buy some barstools from there I ended up returning. Amazon does not offer free returns for just any reason anymore, so be aware of that. If it's damaged or wrong they will, but not just because you don't like it. It costs me like $15 for each stool to return them. Plus you may have to arrange UPS pickup yourself, idk.