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I'm interested in understanding the costs and logistics associated with your products. Could you provide details on the initial sample cost, and how the pricing structure might change for bulk orders later on? Additionally, I'd like to know the typical production timeline for samples, as well as the estimated duration for production and shipping once we approve the design. Also, it would be helpful to clarify your revision policy should we require any changes to the initial sample—specifically, how many revisions are included. Lastly, please outline your payment terms and available shipping methods, so I can have a comprehensive understanding of the entire process. Thank you!