I almost entirely avoid using them for purchasing home goods at this point, the risk is too great and the customer service is too poor. For things that Amazon itself sells, the cost is often not competitive. For everything else, I can get it cheaper by shopping locally, getting from big box stores or by using Alibaba. "Prime" two day shipping is often inexplicably 3-5 day shipping (and I live in a major US metro).
All this saddens me, a former Amazon employee who was a loyal user of their products for a long time. But at this point it doesn't seem like Amazon is too concerned about the quality of their retail catalog. My business will go elsewhere.