The last year it's been a mixed bag. One issue is that seller warnings would appear on Prime delivered products, which meant that the risk is then pretty much

The last year it's been a mixed bag. One issue is that seller warnings would appear on Prime delivered products, which meant that the risk is then pretty much zero for the buyer. The ratings gradings system wasn't very reliable either. I bought a few things that were rated "F" but were fine. Today I go for a combination of sales + ratings. Amazon also has a warning for some things that are "frequently returned items" or a notice that "customers usually keep this item." And then I buy Prime delivered items, and a return is not an issue for me then.