they back their customers returns with the amazon guarantee. prime membership is a hugh bargain when you realize all you get with it.amazon music alone is worth the price. no shipping unless the seller charges shipping. if you need just a couple things, there's no minimum for free shipping. plus amazon tv (which iv'e not had time to watch yet). and i love Alexa. never thought i would like prime or Alexa-turned out they were the best gifts i ever received.