If defective on arrival, the customer will get a entire refund straight away and no return with the miner is needed. Merchandise are delivered to all around the entire world. We deliver our shipments with DHL. For all orders higher than 500 USD, shipping is delivered free of charge. https://zionkamzk.bluxeblog.com/71593554/bitmain-antminer-z15-pro-buying-guide