I purchased a rife machine from Marius at discount deal which stopped working after two months. Marius bent over backwards to help me, troubleshooting, sending me a brand new machine, and paying the postage for everything, including the return of the original machine. He was always responsive, concerned, helpful, and reassured me that I would end up with a working machine and I did. He gets 5 stars for customer service from me! One note-I first tried to reach him through paypal channels and could not. However he received my inquiry immediately when I went through Bonanza, so if you have an issue be sure and go through Bonanza.