Hi, Seeed Customer
The shipping cost is depended on the weight of the packages, it will be the same price if the total weight of the package doesn’t overweight, no matter how many items it contains, But in your case, we will refund you 80 USD coupon to make up for the inconvenience.
Please feel free to contact us if you have any questions. Thanks.
Best Regards!
Seeed Customer Support Team
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