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I'm interested in your sky rover product and would like to get a quote for how much it would cost to have it delivered to the United States. Could you please provide me with the unit price, as well as any additional shipping fees I should be aware of? It would also be helpful to know if there are any bulk order discounts or special promotions currently available. In addition, I'd appreciate details on the estimated delivery time once the order is placed, as well as any warranty or after-sales service options that come with the purchase. If you have a catalog or a brochure available, I'd love to take a look at it for more information on features and specifications. Looking forward to your prompt response!