It depends on which payment methods you accept. Do you want to change a shipping price after someone placed an order? if the order was paid with credit card then it will be difficult to get the customer to pay the difference. However, i would go into the database and update the shipping cost for the specific order. Your second question i don't quite understand.
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It depends on which payment methods you accept. Do you want to change a shipping price after someone placed an order? if this order was paid with credit card then its difficult. However, i would go into the database and update the shipping cost for the specific order. Your second question i don't quite understand.
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