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There are various credit cards, Apple Pay, Google Pay, PayPal, cash on delivery, bank transfer, and convenience store prepayment.
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It can be shipped within 1-2 business days from your order and nationwide within 1-2 business days from shipping. (Basically, it will be delivered to you within 2 to 3 days after your order.)
For international orders, it could take 1-4 weeks depending on the shipping carrier as well as your countries customs procedures. 
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We do not accept returns due to customer convenience other than initial defects. In case of initial failure, please contact us within one week.